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Garmin Descent Mk3i 51mm Dive Computer Smartwatch Carbon Gray DLC Titanium/Silicone Band

SKU: GRMDMK51BK MFR: 010-02752-10

Key Features

  • Dive confidently with air integration, monitoring tank pressure right on your Garmin dive computer.
  • Enjoy a user-friendly dive computer with a vibrant color display, perfect for any underwater adventure.
  • Long-lasting rechargeable battery ensures your Garmin Descent Mk3i is ready for multiple dives.
  • Explore freedive mode, alongside standard scuba features, expanding your underwater capabilities.
  • Downloadable dive logs via Bluetooth help you track and analyze every dive with ease.
  • Navigate effortlessly with the integrated digital compass, a must-have for serious scuba expeditions.
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1 Year

$139.00

2 Year

$229.00

3 Year

$349.00

Available to U.S. customers only.

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Questions & Answers

Jacquelyn M : Is this an open box dive computer or one that has been used before?Miguel L : No, this new and never been use.
Shopper : Is the titanium band adjustable for no wetsuit during day and over wetsuit on night dive? Or do links have to be removed? Also, there are conflicting answers here about whether the titanium band comes with a silicon band as well. Which is it?  Thanks.darrick c : Hello, the titanium, you would need to remove/add link to adjust the sizing on the titanium. If you get the titanium the silicone strap is also included at least when you buy this from Scuba.Com. Not sure what other stores offer in this model.
Shopper : Does the T1 transmitter work with the MK3i?darrick c : Descent™ dive watches such as the Descent™ Mk2i, Descent™ Mk3i - 43 mm, and Descent™ Mk3i - 51 mm watches have the ability to pair to Descent™ transmitters which use SubWave™ underwater communication network technology to report air tank pressure and diver depth during a dive. Descent™ T2 transmitters use updated technology that allows you to send and receive preset messages underwater using your paired Descent Mk3i watch. You can use either a Descent™ T1 or Descent™ T2 transmitter with any watch with air integration, but some features may be limited by the combination of watch and transmitter that you have, and your watch or transmitter may need a software update before they can function together. Check the table below for device and software compatibility.SEAN R : Yes, it does. The messaging feature will not work with the T1, but it functions perfectly well for measuring PSI remaining.
Shopper : I previously asked if the titanium band version also includes a silicone band and was told that it does not.  However, on the Garmin website, they say that it does.  Which is it?darrick c : Hello, yes, the Titanium Band version also comes with the silicone band.
Shopper : Does the Titanium band version also include the silicone band?Charlie K : The Mk3i with the Titanium band does come with the silicone band.darrick c : Hello, no, it does not come with the silicone band.

Reviews about this item

Review Summary

2024-06-18T20:00:00

Rated 5 out of 5

Easy to learn

I was pleasantly surprised at how easy it is to customize my Garmin Mk3i. The Dive Master (Dan) at First Coast Divers here in Jacksonville Fl, is very knowledgeable and provided perfect instructions on how to use.

Troy C.

2024-06-16T20:00:00

Rated 4 out of 5

great everyday watch that you can use for divin a

Got the Descent MK3i 51mm as a replacement for my FR945 as it was showing it's age. Note, I didn't get the transmitter, so can't comment about the integration. As an everyday watch, it's great. I really like the new features such as dive & training readiness from the glances. As a dive watch, I am still getting used to it, and I will be comparing it to the larger Shearwater models (Peregrin & Perdix). I also dive normally in cold water, with drygloves and lose a good amount of dexterity. Screen is great & bright. The large number model is a really nice feature. I really like the pool move feature as well. The customization of fields is nice. Battery life is great as well. With the drygloves, I do find the larger buttons on the perdix / peregrin easier to trigger, but I suspect it will take time to get used to. I do love how since it's paired with my phone, I don't need to manually sync my dives.

coldwaterweenie

2024-06-16T20:00:00

Rated 3 out of 5

It has almost everything but it's slow sometimes

It has almost everything but it's slow sometimes and sometimes it just freezes You need to press everything and wait few seconds for the watch to process

Saeedbub

2024-06-14T20:00:00

Rated 5 out of 5

Great apps

It is a well designed watch with all the sports apps one would ever need. Its integration with the Garmin dive app is awesome .

Guenter55

2024-06-10T20:00:00

Rated 5 out of 5

This watch is everything I need

I had an Epix for a few years and loved it. Also a diver so had a separate lower level dive computer to take on trips. Super excited to have a great dive computer in the same package of an otherwise amazing Garmin watch.

parkerh

2024-06-09T20:00:00

Rated 5 out of 5

Excellent product.

I bought this watch computer a month ago, so far is great as advertised, will see in time how it holds up.

Lirenzo S.

2024-06-06T20:00:00

Rated 5 out of 5

Worth The Upgrade

Upgraded from the Mk2i, which I felt was a solid performing dive/adventure watch. The Mk3i takes it to another level, most notably the AMOLED display. Several dives on this watch have proven it to be as solid, if not slightly more so, as the Mk2i.

ShaneT

2024-06-05T20:00:00

Rated 5 out of 5

Best everyday dive computer and watch

I've had the Apple Watch, the Garmin Descent mk1 and other speciality watches. Got the mk3 prior to a cruise and dive trip and this by far the best everyday device and dive comp combination ever. I've also used it for golf and workouts and at work. Very flexible and customizable. The best thing is the battery life. It's been days since I charged it and still have days left. Took it to Bonaire and it had me ahead of everything on the dive. Best watch I've ever had. Ever going to the Apple Watch again.

MCT W.

2024-05-30T20:00:00

Rated 5 out of 5

Love diving and living with my Mk3i

I previously owned a 51mm Epix Pro Gen 2 sapphire and loved it. I do karate, swimming, walking, and other outdoor activities. I was a previous Apple Watch Ultra user but made the switch and never went back. I got my OW certification and found out the Epix is not dive-certified so I sold it, pretty much for what I paid for it, and got the Mk3i. It's amazing!!! I have the air integration which is nice, the dive maps show me where I enter and exit, and all the underwater stats have replaced a paper log. I am glad I made this purchase and my other watch pretty much paid for half of this one.

Diver J.

2024-05-30T20:00:00

Rated 4 out of 5

LOVE MY MK3i BUT

OI love my MK3 but I miss my previous dashboard of only the compass when diving.

AdrianMeneses

2024-05-21T20:00:00

Rated 3 out of 5

Lack of Firections

Upon receiving the watch and looking at the enclosed instruction books, I'm glad we had an electron microscope to read the fine print. I did find many videos of eventually that are YouTube videos that you have to go on the web to get in order to try to understand what the Watch can and can't do?..!!!! It's a great watch but again it's overwhelming to try to figure all of it out upon yourself. I would suggest that Garmin set up three levels of training for the watch with videos. One level is the beginning level. The second level is intermediate and getting around and moving and adding apps and other instructions, and the third level would be advance level, which could be used in depth directions, and analysis of the operates

Some G.

2024-05-16T20:00:00

Rated 5 out of 5

An amazing dive computer and daily wearable

I had the original Apple Watch and quickly returned it as I felt it was very half-baked and unnecessary. Wow has a lot changed. I love the Descent Mk3i, I enjoy all the health metrics and usefulness out of the water, but it really shines when diving. I had a Shearwater Perdix around 8 years ago and the Garmin does everything I used the Perdix for and then some. I'm very pleased with the watch and highly recommend it.

Proto99

2024-05-14T20:00:00

Rated 5 out of 5

Initial Thought, WOW

Bought the 3i as my primary computer and moved my 2i to second computer status. Screen, battery life and light in the 53 mm are fantastic. Won't be able to evaluate the dive computer function fully until June in the South Pacific. Golf and all my other activity functions are still great.

Craig K.

2024-04-18T20:00:00

Rated 5 out of 5

Super quality

Easier use than my MK2i. I love the features for fitness and dive mode.

Scyllis

2024-04-18T20:00:00

Rated 4 out of 5

Good all around excep

I bought my first mk3i and it stopped working. They were very good in replacing it quickly. It often will not read my tank pressure then it will. I give it a solid good but not great

ScubaAvi

2024-04-10T20:00:00

Rated 4 out of 5

Could be better.

I bought this watch for the dive computer and functions. It is also a smart watch. GPS could be better and have a stronger signal. Maps take a while to update to current location. Watch is loaded with sports features, but they all have the same data. All these sports and the only features they have are timers, heart rate, it's all the same, over and over. Watch needs more layout, more clock appearances, more color choices. Flashlight is bright and gets the job done. Tac light was a very good choice. Only complaints are the GPS positioning takes too long to update and all the different sports have the same features and data.

Cole H.

2024-04-09T20:00:00

Rated 5 out of 5

Mk3i - AMAZING

This is a substantial upgrade from the previous model. I can't wait to see what is in store for future updates

Teach D.

2024-04-08T20:00:00

Rated 5 out of 5

Great, needs software updates to be perfect.

???? The Garmin Mk3i watch is almost perfect for my active lifestyle. Whether I'm pounding the pavement on a run, gliding through the water in my kayak, or exploring the depths while scuba diving, this watch has me covered. One of the standout benefits of Garmin ecosystem for me is how seamlessly the Garmin Connect software integrates all my activities, making it easy to track and analyze my performance. The training programs available are a bonus, helping me stay on top of my fitness goals. The built-in flashlight was a nice surprise. It was an unexpected addition that's proven to be useful on many occasions. When I'm diving in the ocean, the in-reach communication feature provides invaluable peace of mind. However, it's important to note that in-reach communication requires a separate device and subscription. The GPS, compass, and maps functionalities are spot-on, enhancing my outdoor adventures. And I must mention, the new bright screen is a great improvement, ensuring visibility even in bright sunlight. However, the data screens for diving have limited customization. If you want to see your gas pressure, there is basically one data field that can be changed on that screen. Hopefully, this will be fixed through software updates in the future. Despite this minor hiccup, the watch excels in all other areas. Overall, the Garmin Mk3i is a great companion for any activity, with just a few tweaks to Scuba Diving screens needed to reach perfection.

MidwestRecDiver

2024-04-04T20:00:00

Rated 5 out of 5

Keeps Getting Better!

I started out years ago to buy a smart waterproof smartwatch. No one had a watch that had sustained battery power or reserves. Settled on the fenix series. It was great, but lacking in a few features I would like to have. Then the MK series came out - wow, excellent replacement for my fenix. The MK 2i was my travel/outdoors and health buddy. Always wished for an amoled display that the iWatches had but I was not a 1 day battery life. Then the MK 3i was unveiled - with all my hopes and dreams in a computer dive/smartwatch. I am in heaven. Garmin is always on the cutting edge of delivering what we are looking for. An excellent addition to the MK series. Way to go!!!!

Maverick1174

2024-03-27T20:00:00

Rated 5 out of 5

Awesome

This is my 3rd one and I love it great producti !!!

Eddie 0.

2024-03-21T20:00:00

Rated 5 out of 5

Amazing Watch

I LOVE this watch. Have had a Fenix 5 for many years, but as I do like to dive, have been waiting for the new version of the dive watch to upgrade. This thing is a beast! All the amazing features of the Fenix/Epix series I've been wanting in an upgrade, but add on completely insane diving capability as well. Only 7 dives so far with the new watch and T2 transmitter, but works flawless! So glad I waited for this one!

JeepTX

2024-03-19T20:00:00

Rated 5 out of 5

Great watch

four dives in, replacing a standalone computer. this is a great dive watch; extremely intuitive to use underwater. I also use all of the other running and cycling features and they operate extremely well, as expected from Garmin.

hsa1

2024-03-13T20:00:00

Rated 3 out of 5

Great BUT....

Cons 1 My PSI is just as important as my depth. The PSI font size is HORRIBLE. Large font is just bold basically. I do not wear or need glasses either. The person that designed the PSI font size and PSI display location only used this in a pool or the Carribian Islands. Never in limited/low visibility waters. 2 Propriatary charging cable works great but super inconvenient. How about wireless charging its 2024. 3 The Tank transceivers noise is like a dripping faucet in the middle of the night. PROS The person that engineered the battery life should get a raise. Watch band replacement A+ OLED Display A+ Garmin Dive App A+ Garmin Connect App A+ 51mmA+ Button Quality & Ease of use A+ Overall quality of build A+

KtoZ

2024-03-10T20:00:00

Rated 5 out of 5

great battery, and great morning updates

Upgraded from the descent MK2i, this has much improved battery life as well as I really like the morning updates to start your day

Sriracha

2024-03-10T07:04:50

Rated 5 out of 5

Awesome Watch

I've owned the Garmin 5x, 6x, 945 LTE and Epix Gen2. I run, hike, downhill ski, cycle and now with my MK3i I dive with my watch plus all these other things. I've used this on 10 dives so far and love it with the air integration. Wearing it all day and night allows my watch to track my dive readiness, sleep, body battery and tissue gas levels during my surface interval. Love this watch. Btw I have worn my Apple Ultra diving and it just doesn't compare.

R J.

2024-03-10T03:15:16

Rated 5 out of 5

Garmin MK3i is a winner

I purchased the Garmin Mk3i in January for a dive trip on Maui. As a dive watch it worked flawlessly. It was one less thing not having to worry about. I didn't use the air integration yet. I have used Garmin pay and it works perfectly. I have used many of the other apps and they work well. I have yet to use many of the other features but I'm anticipating worrying free use. There is a steep learning curve to master all of the features of this watch and there are plenty of great tutorials and support if needed.

Adrian R.

2024-03-06T19:00:00

Rated 5 out of 5

Great watch and features

This is an excellent watch and well worth the investment. The only thing I wish it had was a speaker/microphone so I could accept and make calls. However, I can understand why it doesn't.

JohnDLan

2024-03-02T19:00:00

Rated 5 out of 5

This is a very nice product.

I bought this to replace my MK2i and I love it. Thanks Garmin.

Tim595

2024-02-29T19:00:00

Rated 4 out of 5

Great Watch and Dive Computer.

I am a scuba instructor so the biggest feature I need is obviously the dive computer. I teach diving to 330' with rebreathers and helium. That being said I need to put my life on the line and the Garmin is my safety net. It has not do disappointed! The screen is perfect. The battery life is long so it doesn't need constant recharging. And the apps bring it all together. I want to figure out how to keep the watch screen on all the time, maybe dimmed but visible. That's probably me though and an instruction book. I would also like to lock the right side buttons so the watch doesn't trip over to an app by accident. I can't express how much I love the Descent series of watches/dive computers. I have upgraded from each one and they simply get better and better.

Rubberduckscuba

2024-02-27T19:00:00

Rated 5 out of 5

Even better than the Mk2i

I've taken my first trip with the new Mk3i and love it. I dove the Mk31 and Mk2i side by side, and the Mk3i is even easier to read. There was no noticeable difference in the two computer's dive management algorithms for the dive, so that awesome. The T1 and T2 transmitters were within 3 psi of each other from start to finish, so that too is awesome. That said, the Mk3i's T2 transmitter does emit a rather high pitch pulse every 10-12 seconds which isn't great, but whatever (as long as it doesn't scare-off the fish). I was able to pair with my buddy's new Mk3i/T2 setup for air monitoring and texting, and it works as expected. I really hope Garmin soon allows us to to make-up some of our own text messages/responses (using Connect I'm guessing) because the current stock messages are rather bland and boring. I did need to rethink the altimeter settings since the computer said I was at -65.4 feet when I was sitting in the boat (see the picture), but once I switched to having it use GPS for altimeter all was well. All in all I'm super happy with the computer and I know my son is going to love getting my current Mk2i as a gift.. :)

MrMikeD

Garmin Descent Mk3i 51mm Specifications

General

General

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  • Lens Material

    Sapphire crystal

  • Bezel Material

    Diamond-like Carbon (DLC) coated titanium

  • Case Material

    Fiber-reinforced polymer with titanium rear cover

  • Battery Life (Smartwatch Mode)

    Up to 25 days (10 days always-on)

  • Display Type

    AMOLED

  • Led Flashlight

    Yes

  • Touchscreen

    Yes

  • Water Rating

    Dive (200 meters)

  • Sleep Score And Insights

    Yes

  • Training Readiness

    Yes

  • Training Status

    Yes (improved)

  • Daily Suggested Workouts

    Yes (improved)

  • Multi-Band GPS

    Yes

  • Built-In Mapping

    Yes

  • Garmin Pay

    Yes

  • Music Storage

    Yes

  • QuickfitWatch Band Compatible

    Yes (26mm)

  • Strap Material

    Silicone or DLC coated titanium

  • Leakproof Inductive Buttons

    Yes

  • Display Size

    1.4" diameter (35.56 mm)

  • Display Resolution

    454 x 454 pixels

  • Color Display

    Yes

  • Battery Life

    Smartwatch: Up to 25 days (10 days always-on)
    Battery Saver Watch Mode: Up to 31 days
    GPS Only: Up to 76 hours (56 hours always-on)
    All Satellite Systems: Up to 55 hours (43 hours always-on)

  • Battery Life (Contd.)

    All Satellite Systems + Multi-band: Up to 48 hours (38 hours always-on)
    All Satellite Systems + Music: Up to 17 hours
    Max Battery GPS: Up to 118 hours
    Expedition GPS: Up to 24 days
    Dive Mode: Up to 66 hours

  • Battery Life (Contd..)

    Dive Mode with Air Integration: Up to 40 hours

  • Charging Method

    Garmin proprietary clip charger

  • Memory/History

    32 GB

Clock Features

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  • Time/Date

    Yes

  • GPS Time Sync

    Yes

  • Automatic Daylight Saving Time

    Yes

  • Alarm Clock

    Yes

  • Timer

    Yes

  • Stopwatch

    Yes

  • Sunrise/Sunset Times

    Yes

Health & Wellness Monitoring

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  • Wrist-Based Heart Rate

    Yes(Constant, Every Second)

  • Daily Resting Heart Rate

    Yes

  • Abnormal Heart Rate Alerts

    Yes (high and low)

  • Respiration Rate(24X7)

    Yes

  • Pulse Ox Blood Oxygen Saturation

    Yes

  • Fitness Age

    Yes (in app)

  • Body BatteryEnergy Monitor

    Yes

  • All-Day Stress

    Yes

  • Relaxation Breathing Timer

    Yes

  • Breathwork

    Yes

  • Sleep

    Yes (advanced)

  • Hydration

    Yes (in Garmin Connect)

  • Women's Health

    Yes (in Garmin Connect)

  • Health Snapshot

    Yes

  • Jet Lag Adviser

    Yes

Sensors

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  • GPS

    Yes

  • Glonass

    Yes

  • Galileo

    Yes

  • SatIQTechnology

    Yes

  • Garmin ElevateWrist Heart Rate Monitor

    Yes

  • Pulse Ox Blood Oxygen Saturation Monitor

    Yes

  • Barometric Altimeter

    Yes

  • Compass

    Yes

  • Gyroscope

    Yes

  • Accelerometer

    Yes

  • Thermometer

    Yes

  • Ambient Light Sensor

    Yes

  • Depth Sensor

    Yes

Daily Smart Features

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  • Connectivity

    BLUETOOTH, ANT+, Wi-Fi, Subwave

  • Connect IQ

    Yes (Downloadable Watch Faces, Data Fields, Widgets And Apps)

  • On-Device Connect IqStore

    Yes

  • Smart Notifications

    Yes

  • Text Response/Reject Phone Call w/Text

    Yes (AndroidOnly)

  • View Images From Notifications On Watch

    Yes (AndroidOnly)

  • Morning Report

    Yes

  • Calendar

    Yes

  • Weather Forecasts

    Yes

  • Realtime Settings Sync

    Yes With Garmin ConnectMobile

  • Battery Saver

    Yes (Customizable Low Power Watch)

  • Controls Smartphone Music

    Yes

  • Plays And Controls Watch Music

    Yes

  • Find My Phone

    Yes

  • Find My Watch

    Yes

  • VirbRemote

    Yes

  • Smart Trainer Control

    Yes

  • Pairs With Garmin ConnectMobile

    Yes

  • Smartphone Compatibility

    iPhone, Android

  • Stocks

    Yes

  • Red Shift Mode

    Yes

Activity Profiles

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  • Gym

    Strength, HIIT, Cardio, Elliptical Training, Stair Stepping, Floor Climbing, Indoor Rowing

  • Multisport

    Swimming/Running, Triathlon

  • Wellness

    Walking, Pilates, Yoga

  • Indoor Running

    Treadmill Running, Indoor Track Running, Virtual Running

  • Outdoor Running

    Running, Outdoor Track Running, Trail Running, Ultra Running

  • Outdoor Recreation

    Hiking, Indoor Climbing, Bouldering, Climbing, Hunting, Horseback Riding, Golfing, Disc Golf, Archery

  • Cycling

    Biking, Road Biking, Mountain Biking, Gravel Biking, Bike Commuting, Bike Touring, eBiking, eMountain Biking, Indoor Biking, Cyclocross, BMX

  • Swim

    Pool Swimming, Open Water Swimming

  • On The Water

    Stand Up Paddleboarding, Rowing, Kayaking, Surfing, Kiteboarding, Windsurfing, Fishing, Boating, Sailing, Sail Racing, Water Skiing, Wakeboarding, Wakesurfing, Tubing, Snorkeling, Sailing Expedition, Whitewater

  • Motor Sports

    Motorcycling, Overlanding, Motocrossing, ATVing, Snowmobiling

  • Racket Sports

    Tennis, Pickleball, Badminton, Squash, Table Tennis, Padel, Platform Tennis, Racquetball

  • Snow & Winter

    Skiing, Snowboarding, Backcountry Snowboarding, XC Classic Skiing, Backcountry Skiing, Ice Skating, Snowshoeing

  • Team Sports

    Basketball, Volleyball, Field Hockey, Ice Hockey, Football/Soccer, American Football, Lacrosse, Rugby, Ultimate Disc, Cricket, Softball, Baseball

  • In The Ring

    Boxing, Mixed Martial Arts

  • Other Activity Profiles

    Jumpmaster, Tactical

Safety and Tracking Features

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  • Incident Detection

    Yes ( During Select Activities)

  • Incident Detection Alert

    Yes ( On Phone For Wearables)

  • Assistance

    Yes

  • Livetrack

    Yes

  • Group Livetrack

    Yes

  • Live Event Sharing

    Yes

Tactical Features

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  • Stealth Mode

    Yes

  • Night Vision Mode

    Yes

  • Dual Grid Coordinates

    Yes

  • Kill Switch

    Yes

  • XeroLocations

    Yes

  • Ballistics Solver

    Yes (unlock required)

Gaming Features

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  • Gaming Activity

    Yes

  • GameonApp Compatible

    Yes

Diving Features

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  • Dive Activity Maximum Operating Depth

    200 meters

  • Single-Gas Mode

    Yes

  • Multi-Gas Mode

    Yes

  • Gauge Mode

    Yes

  • Apnea Mode

    Yes

  • Apnea Hunt Mode

    Yes

  • Decompression Model

    Buhlmann ZHL-16c with gradient factors

  • Nitrox Support

    Yes

  • Trimix Support

    Yes

  • Closed Circuit Rebreather (CCR)

    Yes

  • Gas Mixes

    Air, Nitroxand Trimix, up to 100% O2;1 bottom gas and up to 11 deco and/or backup gasses.

  • Po2

    Up to 2.0 with customizable deco PO2 setting

  • SubwaveSupport

    Yes

  • Air Integration

    Yes (via Subwave)

  • Number Of Transmitters Supported

    8

  • Gas Time Remaining

    Yes

  • Gas Consumption Rate

    Yes

  • Auto Start/End Dive

    Yes

  • Custom End-Dive Timeout

    Yes (20s to 10 m)

  • Safety Stop

    Yes (customizable off/3min/5min)

  • Deep Stops

    Yes (using custom gradient factors)

  • Customizable Conservatism

    Yes (low/medium/high or custom using gradient factors)

  • Dive Ascent/Descent Rate Indicator

    Yes

  • Automatic Altitude Adjustment

    Yes

  • No Fly Time

    Yes

  • Dive Planner

    Yes (basic NDL + multi-gas deco planner)

  • Tides

    Yes

  • Backlight

    Yes (configurable time and intensity; auto-on at depth)

  • Automatically Saves

    Yes (Dive Entry And Exit Locations)

  • Custom Dive Data Screens

    Yes

  • Sync Dive Log To Garmin DiveMobile App

    Yes

  • Alerts & Alarms

    Audible and vibration alarms for ascent rate, PO2, CNS/OTU, NDL, deco, gas switching, tank pressure, gas consumption rate. Customizable (up to 40) audible and/or vibration per dive mode, based on depth or time

  • 3-Axis Dive Compass

    Yes (with adjustable heading, quick change to 90R, 90L and reciprocal). Indicates degrees and direction back to set heading

  • Missed Deco Lockout

    Yes (can be disabled prior to dive with user acknowledgement)

  • Residual Tissue Loading Reset

    Yes (on the surface with user acknowledgement)

  • Surface Diver Status Widget

    Yes (surface interval, N2/HE loading, CNS, OTU and tissue compartment status)

Boating Features

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  • Available Boating Profiles

    Boating, Sailing, Sail Racing

  • Anchor Alarm

    Yes

  • Autopilot Control

    Yes

  • Boat Data Streaming

    CIQ

  • Virtual Starting Line

    Yes

  • Countdown Timer

    Yes

  • Tack Assist Mode

    Yes

  • Built-In Barometer And Tide Tables

    Yes (downloadable tides)

  • Wearable Trolling Motor Remote

    Yes

Activity Tracking Features

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  • Step Counter

    Yes

  • Move Alerts

    Yes (Displays On Device After A Period Of Inactivity)

  • Auto Goal

    Yes (Learns Your Activity Level And Assigns A Daily Step Goal)

  • Calories Burned

    Yes

  • Floors Climbed

    Yes

  • Distance Traveled

    Yes

  • Intensity Minutes

    Yes

  • Trueup

    Yes

  • Move Iq

    Yes

  • Garmin ConnectChallenges App

    Yes (optional Connect IQ app)

Gym & Fitness Equipment

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  • Cardio Workouts

    Yes

  • Strength Workouts

    Yes

  • Hiit Workouts

    Yes

  • Yoga Workouts

    Yes

  • Pilates Workouts

    Yes

  • On-Screen Workout Animations

    Yes

  • On-Screen Workout Muscle Maps

    Yes

  • Automatic Rep Counting

    Yes

Training, Planning and Analysis Features

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  • Customizable Data Pages

    Yes

  • Downloadable Training Plans

    Yes

  • Course Guidance

    Yes

  • Hr Zones

    Yes

  • Hr Alerts

    Yes

  • Hr Calories

    Yes

  • % Hr Max

    Yes

  • % Hrr

    Yes

  • Recovery Time

    Yes

  • Auto Max Hr

    Yes

  • Race Glance/Widget

    Yes

  • Hrv Status

    Yes

  • Hrv Stress Test

    Yes (with compatible accessory) (Measures Your Heart Rate Variability While Standing Still, For 3 Minutes, To Provide You With An Estimated Stress Level; The Scale Of This Is 1 To 100; Low Scores Indicate Lower Stress Levels)

  • Hr Broadcast

    Yes(Broadcasts Hr Data Over Ant+To Paired Devices)

  • Respiration Rate(During Exercise)

    Yes (with compatible accessory)

  • GPS Speed And Distance

    Yes

  • Customizable Activity Profiles

    Yes

  • Auto Pause

    Yes

  • Interval Training

    Yes

  • Improved Interval

    Yes (Includes Open Repeats, Intervals Data Page, Rest Screen And Auto Detection)

  • Advanced Workouts

    Yes

  • Power Modes

    Yes (Customizable In-Activity Battery Settings)

  • Hrm Running Pace And Distance

    Yes

  • Auto Lap

    Yes

  • Manual Lap

    Yes

  • Rest Timer

    Yes

  • Configurable Lap Alerts

    Yes

  • Heat And Altitude Acclimation

    Yes

  • Vo2 Max(Run)

    Yes

  • Vo2 Max(Trail Run)

    Yes

  • Realtime Stamina

    Yes

  • Endurance Score

    Yes

  • Load Ratio

    Yes

  • Training Load

    Yes

  • Training Load Focus

    Yes

  • Training Effect

    Yes

  • Training Effect(Anaerobic)

    Yes

  • Primary Benefit (Training Effect Labels)

    Yes

  • Custom Alerts

    Yes

  • Audio Prompts

    Yes

  • Finish Time

    Yes

  • Virtual Partner

    Yes

  • Race An Activity

    Yes

  • Auto Multisport Activities

    Yes

  • Manual Multisport Activities

    Yes

  • Garmin Live Segments

    Yes

  • Strava Live Segments

    Yes

  • Round-Trip Course

    Yes Creator (Running/Cycling)

  • TrendlinePopularity Routing

    Yes

  • Touch And/Or Button Lock

    Yes

  • Hot Keys

    Yes

  • Auto Scroll

    Yes

  • Activity History On Watch

    Yes

  • Physio Trueup

    Yes

  • Unified Training Status

    Yes

Running Features

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  • Available Run Profiles

    Running, Outdoor Track Running, Treadmill Running, Indoor Track Running, Trail Running, Virtual Running, Ultra Running

  • GPS-Based Distance, Time And Pace

    Yes

  • Running Dynamics

    Yes

  • Vertical Oscillation And Ratio

    Yes

  • Ground Contact Time And Balance

    Yes

  • Stride Length(Real Time)

    Yes

  • Cadence

    Yes(Provides Real-Time Number Of Steps Per Minute)

  • Running Power

    Yes

  • Grade-Adjusted Pace

    Yes

  • Performance Condition

    Yes

  • Lactate Threshold

    Yes (with compatible accessory)

  • PaceproPacing Strategies

    Yes

  • Run Workouts

    Yes

  • Hill Score

    Yes

  • Trail Run Auto Climb

    Yes

  • Race Predictor

    Yes

  • Course & Weather-Specific Race Predictor

    Yes

  • Foot Pod Capable

    Yes

  • Run/Walk/Stand Detection

    Yes

Golfing Features

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  • Preloaded With 43,000 Courses Worldwide

    Yes

  • Yardage To F/M/B

    Yes (Distance To Front, Middle And Back Of Green)

  • Yardage To Layups/Doglegs

    Yes

  • Measures Shot Distance

    automatic (Calculates Exact Yardage For Shots From Anywhere On Course)

  • Digital Scorecard

    Yes

  • Custom Targets

    Yes

  • Stat Tracking

    Yes (Strokes, Putts Per Round, Greens And Fairways Hit)

  • Garmin Autoshot

    Yes

  • Full Vector Map

    Yes

  • Auto Courseview Updates

    Yes

  • Green View With Manual Pin Position

    Yes

  • Hazards And Course Targets

    Yes

  • Pinpointer

    Yes

  • Playslike Distance

    Yes

  • Touch-Targeting

    Yes (Touch Target On Display To See The Distance To Any Point)

  • Handicap Scoring

    Yes

  • Tempo Training

    Yes

  • Round Timer/Odometer

    Yes

  • Automatic Club Tracking Compatible

    Yes(Requires Accessory)

  • Wind Speed And Direction

    Yes (Requires Connection To Garmin Golf App)

  • Virtual Caddie

    Yes

  • Pairs With Garmin Golf App

    Yes

  • Tournament Legal

    Yes

  • Green Contours

    Yes(With Garmin Golf Membership)

Outdoor Recreation

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  • Point-To-Point Navigation

    Yes

  • Bread Crumb Trail In Real Time

    Yes

  • Back To Start

    Yes

  • Tracback

    Yes

  • Ultratrac Mode

    Yes

  • Around Me Mode

    Yes

  • Reference Point

    Yes

  • Up Ahead

    Yes

  • NextforkNavigation

    Yes

  • Elevation Profile

    Yes

  • Distance To Destination

    Yes

  • Barometric Trend Indicator w/Storm Alert

    Yes

  • ClimbproAscent Planner

    Yes

  • Vertical Speed

    Yes

  • Total Ascent/Descent

    Yes

  • Rest Timer (Ultra Run Only)

    Yes

  • Auto Rest

    Yes

  • Future Elevation Plot

    Yes

  • Preloaded Road And Trail Maps

    Yes

  • Preloaded Ski Resort Maps

    Yes

  • Downloadable Cartography Support

    Yes

  • GPS Coordinates

    Yes

  • Sight 'N Go

    Yes

  • Area Calculation

    Yes (via Connect IQ)

  • Fish Forecast

    Yes

  • Projected Waypoint

    Yes

  • Sun And Moon Information

    Yes

  • Expedition GPS Activity

    Yes

  • Tides

    Yes

  • Tide Glance

    Yes

Cycling Features

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  • Courses

    Yes

  • Bike Lap And Lap Maximum Power

    Yes (With Power Sensor)

  • Race An Activity

    Yes

  • Alerts

    Yes (Triggers Alarm When You Reach Goals Including Time, Distance, Heart Rate Or Calories)

  • Ftp(Functional Threshold Power)

    Yes (with compatible accessory)

  • Power Curve And % Ftp Workouts

    Yes

  • Cycle Map

    Yes (Routable Cycling-Specific Street Map)

  • Mtb Grit & Flow

    Yes

  • Advanced Cycling Dynamics

    Yes

  • Compatible With VectorAnd Rally

    Yes(Power Meters)

  • Compatible With Varia Vision

    Yes(Head-Mounted Display)

  • Compatible With VariaRadar

    Yes (Rear-Facing Radar)

  • Compatible With VariaLights

    Yes

  • Speed And Cadence Sensor Support

    Yes (W/Sensor)

  • Power Meter Compatible

    Yes

  • Power Guide

    Yes

Swimming Features

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  • Open-Water Swim Metrics

    Yes (Distance, Pace, Stroke Count/Rate, Stroke Distance, Swim Efficiency (Swolf), Calories)

  • Pool Swim Metrics

    Yes (Lengths, Distance, Pace, Stroke Count, Swim Efficiency (Swolf), Calories)

  • Stroke Type Detection

    Yes (Freestyle, Backstroke, Breaststroke, Butterfly) (Pool Swim Only)

  • Drill Logging (Pool Swim Only)

    Yes

  • Basic Rest Timer

    Yes (Up From 0) (Pool Swim Only)

  • "Repeat On" Rest Timer (Pool Swim Only)

    Yes

  • Auto Rest (Pool Swim Only)

    Yes

  • Time And Distance Alerts

    Yes

  • Pacing Alerts (Pool Swim Only)

    Yes

  • Countdown Start (Pool Swim Only)

    Yes

  • Pool Swim Workouts

    Yes

  • Critical Swim Speed

    Yes

  • Underwater Wrist-Based Heart Rate

    Yes

  • Heart Rate From External Hrm

    Yes (with HRM-Tri, HRM-Swim, HRM-Pro or HRM-Pro Plus) (Real-Time During Rests, Interval And Session Stats During Rests, And Automatic Heart Rate Download Post-Swim)

Kid Activity Tracking Features

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  • Toe-To-ToeChallenges App

    Yes (optional Connect IQ Toe-to-ToeChallenges app)

Battery

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  • Battery Info

    Required, included

  • Battery Material

    Lithium-ion

  • Battery Type

    Non-Universal

  • Battery Quantity

    1

Physical

Jump to...
  • Dimensions

    2 x 2 x 0.64" (51x 51 x 16.4mm)
    Fits wrists with the following circumference: Silicone band: 5.3-9" (135-230mm)
    Extra long silicone band: 135-355 mm
    Titanium bracelet: 5.3-8.6" (135-220mm)

  • Weight

    No bands: 2.74 oz (77.8g)
    silicone band: 3.72 oz (105.6g)
    titaniumband: 5.85 oz (165.9g)

  • UPC Code

    753759332891

About Garmin Descent Mk3i 51mm

FEATURED REVIEWS

Awesome Watch

By R J.

I've owned the Garmin 5x, 6x, 945 LTE and Epix Gen2. I run, hike, downhill ski, cycle and now with my MK3i I dive with my watch plus all these other things. I've used this on 10 dives so far and love it with the air integration. Wearing it all day and night allows my watch to track my dive readiness, sleep, body battery and tissue gas levels during my surface interval. Love this watch. Btw I have worn my Apple Ultra diving and it just doesn't compare.

My 3rd and best Garmin Descent the Mk3i

By Raul i.

Between my first Garmin Descent and the Mk2i if have 637 dives; an excellent dive computer love the compass function and the air integration. So far I am very impress with my new Mk3i; I Had both T1 and T2 transmitters successfully program. Daily morning assessment is also a welcome addition, looking forward to fully take advantage of this function. The dive app dive sites maps have improved greatly on local dive sites identification.

Descent Mk3i Dive Computer

Immerse yourself in the Descent™ Mk3i watch-style dive computer for a heightened diving experience. With versatile dive modes, SubWave™ sonar technology for diver communication, and support for monitoring tank pressures and depth for up to eight divers (with the Descent™ T2 transceiver), this device offers enhanced functionality. Additionally, a built-in LED flashlight ensures visibility in low-light conditions, both above and below water.

Descent Mk3i Dive Computer
Advanced Design

Advanced Design

Stylish watch-style dive computer with a 1.4” AMOLED display, scratch-resistant sapphire lens, 51 mm titanium bezel, and optional bracelet.

Enhanced Communication

Enhanced Communication

SubWave™ sonar technology for diver-to-diver messages up to 30 meters, monitoring tank pressures, and depth for up to eight divers within 10 meters (with Descent™ T2 transceiver).

Dive Readiness Tool

Dive Readiness Tool

Garmin-developed tool analyzes lifestyle factors (sleep, exercise, stress, jet lag) impacting body's readiness for diving.

DiveView™ Maps

DiveView™ Maps

Maps with bathymetric depth contours and details on over 4,000 dive sites for easy location selection and orientation.

Navigation and GPS

Navigation and GPS

Multi-band GPS for superior positional accuracy, along with ABC sensors, including an underwater compass.

Dive Log Storage

Dive Log Storage

Wrist-based storage for up to 200 dives, with sharing and reviewing capabilities in the Garmin Dive™ app.

Discover a deeper connection with the Descent Mk3i watch-style dive computer. It features multiple dive modes plus SubWave sonar technology for diver-to-diver communication via preset messages (available with software v.15.70 or later). The device also supports monitoring of tank pressures and depth for up to eight networked divers, when paired with the Descent T2 transceiver (sold separately). Purpose-built specifically for divers, the Descent Mk3i dive computer combines a bright 1.2" AMOLED display with scratch-resistant sapphire lens, 200-meter dive-rated case and metal leakproof inductive buttons. DiveView maps offer bathymetric depth contours and more than 4,000 dive sites to help you find where to dive and get oriented. Plus, a dive readiness tool, developed by Garmin, shows how lifestyle factors such as sleep, exercise, stress and jet lag can affect your body's overall preparedness for diving - so, ultimately, you can make better-informed dive plan decisions (data presented is intended to be a close estimation of metrics tracked).

This dive computer is designed to help maximize your preparation for the physical and mental challenges of diving. You can also reference ABC sensors with a 3-axis underwater compass as well as surface GPS capabilities to mark your entry and exit points. When you're ashore, built-in sports apps help you stay on top of your fitness, while Garmin Pay contactless payments, music storage and smart notifications keep you connected (compatible smartphone required).

Garmin Descent Mk3i 51mm Features

  • Advanced, watch-style dive computer features a stunning 1.2" AMOLED display, scratch-resistant sapphire lens and stainless steel bezel
  • Dive-first design with 200-meter dive-rated case includes metal leakproof inductive buttons and multiple dive modes for recreational to technical scuba diving and freediving
  • Enhanced SubWave sonar technology provides the ability to exchange preset diver-to-diver messages up to 30 meters
  • DiveView maps offer bathymetric depth contours and more than 4,000 dive sites to help you find where to dive and get oriented
  • Dive logs automatically sync with the Garmin Dive app downloaded to your compatible smartphone

Warranty Information

This product has a limited warranty of 12 months.

Key Features

  • Dive confidently with air integration, monitoring tank pressure right on your Garmin dive computer.
  • Enjoy a user-friendly dive computer with a vibrant color display, perfect for any underwater adventure.
  • Long-lasting rechargeable battery ensures your Garmin Descent Mk3i is ready for multiple dives.
  • Explore freedive mode, alongside standard scuba features, expanding your underwater capabilities.
  • Downloadable dive logs via Bluetooth help you track and analyze every dive with ease.
  • Navigate effortlessly with the integrated digital compass, a must-have for serious scuba expeditions.