Genesis React Pro Air/Nitrox Computer 3919 009055

Mfg Part #: 3919
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Air & Nitrox Compatible

  • Brand new & completely redesigned! 
  • Not like most other sites that sell the old discontinued model
  • FREE Computer Gauge Guard Included
  • Full Function Air/Nitrox Dive Computer
  • 50 Dive log book
  • Automatic water activation
  • Ascent rate indicator
  • Deep stop reminder
  • PC downloadable, up to 250 dives
  • Backlit Hydroglow Display for Night Diving
  • User Changeable Batteries
  • Time and Date of day (use it like a watch)
  • Automatic Altitude Adjustable
  • Imperial/Metric (user-setting)
  • Temperature (Surface and Depth)
  • Gauge mode selection - option to use as a Digital Depth Gauge to 399 feet
  • Depth to 330 feet
  • Upgrade to wrist mount (as pictured) or Hose Mount - See below to order

Customer Reviews for Genesis React Pro Air/Nitrox Computer:

See the top 20 most helpful scuba gear reviews

Average Customer Review: based on 5 reviews.

Rating: Great computer for a great price
Reviewer: Kent O. Bonde
I purchased the computer as a back-up to replace and older Oceanic DataMax hose-mount that died on me. The React Pro is essentially the same exact but newer version of the DataMax, but branded under the Genesis label. Like the older model, it is intuitive to use and easy to read at glance, with the only distinctive differences that I can tell being that the ReactPro is programable for nitrox and can be downloaded to a pc. While my primary computer is an Oceanic VT4, I find that I monitor the React Pro more often during dives as the data is easier to see, particular for far-sighted.

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1 out of 1 people found this review helpful.

Rating: Reliable dive computer.
Reviewer: Sean P.  -  View all my reviews
This is a very reliable dive computer for OW diving. Highly recommend.

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51 out of 101 people found this review helpful.

Rating: Looks god so far
Reviewer: Jesse Bates  -  View all my reviews
I haven’t had a chance to dive with it yet but the basic setup seams pretty straightforward.

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155 out of 306 people found this review helpful.

Rating: Genesis React Pro is Great
Reviewer: Daniel Phillips  -  View all my reviews
I like the straight forward operation. Clear step through process to review your dives. I recommend it to anyone looking for a work horse of a dive computer. Recently did a trip to Hawaii and did 2 and 3 dives per day. My brother has another brand. He was always asking about no decompression time on multiple dives because his computer either doesnt calculate or he couldnt figure how to find it.

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380 out of 696 people found this review helpful.

Rating: A Simple Fact
Reviewer: Robert Sirk  -  View all my reviews
There are three divers in my family. I dive nitrox with a Genesis in my console. My older teenage son dives nitrox with a Genesis in his console. My younger teenage son dives air with a Genesis in his console. He hasnt taken a nitrox course yet.

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219 out of 439 people found this review helpful.

Questions and Answers for Genesis React Pro Air/Nitrox Computer:

  • Rod:

    Hi, what is the diameter of this module? Thanks

    Darrick  (Certified Scuba Instructor at

    Hello Rod, it is 2.25"

  • Jon:

    1) What dive algorithm does this computer operate on? I am replacing an oceanic data plus, which I think used the pelagic dsat, Rogers Powell algorithm. 2) Will this module fit into an Oceanic hose mount boot and/or a U.S. Divers hose mount boot? Thank you

    Bob  (Certified Scuba Instructor at

    Genesis has their computers made at Pelagic and uses the same motherboard, processor, algorithms and such. It will fit into any of the current Oceanic Veo or sllimline computer boots, but not the US Divers boot as they switched to a different manufacturer prior to this computer being designed.

  • Lee:

    my console has a Suunto Gekko in it. will the Genesis fit in this same console?

    Arthur  (Certified Scuba Instructor at

    Unfortunately the Genesis React will not be able to fit in the Suunto Gekko console. The React is a different size module.

  • David:

    I bought the Genesis React Pro 3919 computer last month and want to buy a spare battery. The spare battery listed on the page with the computer does not list the Genesis React Pro as a model that it fits. Is that the correct battery for this computer?

    Darrick  (Certified Scuba Instructor at

    Hello David, yes the spare battery on the page is the correct one for that unit. I will have our IT dept. up-date that to reflect it.

  • Chris:

    Can you tell me about the conservative setting? I do live aboard diving and my current computer is very conservative. It times out before my dive buddy and we dive similar profiles. Also, can the genesis react pro air/nitrox be manually turned off to conserve battery life?

    Bob  (Certified Scuba Instructor at

    The Genesis computers are typically considered fairly conservative. They cannot be manually shut off. They will shut off after an hour of not being pressurized or used. If the computer has been under pressure, it will shut down to everything except the "time to fly" countdown indicating when it would be safe to fly after a dive.

  • Lee:

    How does dive computer download to different computer and if via cable, is it included? What information is downloaded?

    Darrick  (Certified Scuba Instructor at

    Hello Lee, just to let you know this computer is not a downloadable computer. You would download you computer via a download cable and it depends on if you have a MAC or non-mac computer. The manufacture on there website have the program you would need to download on your home computer so the dive computer and home computer can link to each other.

ReAct Pro Compact Console  dive computer


• Intuitive operation and display.
• Air/Nitrox or Gauge operating mode.
• Expanded memory for dive profiles - access to up to 110 dives.
• Deep stop reminder – conforms to latest theories recommending deep stops for dives that exceed 80 feet.
• Digital and bar graph indicators for nitrogen or oxygen limits.
• Audible and visual alarms – diver selectable.
• Consumer replaceable battery.
• PC downloadable profiles.
• Exceptionally intuitive display.
• Three screens in Dive Mode - User Selected.
• Air/Nitrox - User Selected.
• Imperial or metric - User Selected.
• Dive log sample rate - User Selected.
• Pre-dive planning: Depth - User Selected.
• Time of Day (dive & surface).
• 24 HR. or AM/PM.
• Month and day display.
• PC downloadable.
• Large 270° nitrogen absorption graph.
• Maximum depth - 330 FT.
• Deco stops to 60 ft.
• Safety stop countdown timer.
• Water or manual activation.
• Visual warnings and alarms.
• Automatic altitude adjustment - to 14,000 ft.
• New long-life, consumer replaceable battery.
• HydroGlow illumination (dive & surface).

Surface Mode:

• Surface interval time from first activation.
• Current temperature.
• Number of dives in current series.
• Time of day.

Nitrox Mode:

21% to 50% FO2.
Nitrox indicator icon.
50% FO2 default - User selected.
O2 Sat display (dive & surface).
FO2 display (dive & surface).

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