Ocean Reef Neptune Space Full Face Mask with 2nd Stage 33372 027465


Video: Ocean Reef Neptune Helmet with Communication Kit
Mfg Part #: 33372

Ocean Reef Neptune Space Full Face Mask with 2nd Stage

  • Neptune Space Mask with 2nd Stage
  • Free Padded Protective Carry Bag
  • Free Visor Protector
  • Nitrox compatible to 40% (the recreational limits of nitrox)
  • The Neptune Space is the latest and most innovative mask in the Neptune Series
  • State-of-the-art integrated regulator
  • Reduced internal volume for excellent buoyancy
  • Improved visual field; visible light transfer of visor is 92%
  • Premium grade silicone rubber bellows-type skirt for fit and comfort
  • Durable, scratch-resistant visor
  • Surface air valve included
  • 4-position adjustable exhaust valve for directing the exhaust for the best vision
  • Patented 3-D equalization system for easy ear clearing
  • Six strap head harness providing firm mask positioning and quick mask donning and doffing
  • Easy access purge button
  • Excellent for use in extreme conditions
  • SIZES: 2 Sizes Click Here for Size Chart

Customer Reviews for Ocean Reef Neptune Space Full Face Mask with 2nd Stage:

See the top 20 most helpful scuba gear reviews

Average Customer Review: based on 9 reviews.

Rating: Best mask on the market - Hands Down!
Reviewer: Bruce W.
Pros: This is an awesome mask! The ultimite in diving comfort. It never leaks or fogs and the field of view is excellent. The options are endless and I think eventually Im going to need the corrective lenses installed as Im getting older and my eyes are starting to go, but thats no problem with this mask. I didnt opt for the comms unit and with no regulator in my mouth I was still able to talk to my dive buddies if I got really close. Im also going to buy the add-on heads-up display at some point when the price comes down. Check it out! The air supply hose comes off easily by hand without the "quick release" option if you dont tighten it with a wrench and doesnt leak when finger tight. I had no problen adjusting the nose pieces or using them to equalize either. The look speaks for itself and when you see your vacation pictures next to your buddies Im sure youll agree. The old set up just looks so stone age next to a full face mask. Cons: Its a little pricey for the materials involved and I would have purchased more of the options if it wasnt so exspensive, but it seems to be comming down in price as more people clue into the advantages of full face masks. The surface air valve is a must and great for saving air supply when you dont need it but they need to develop a way to attach a snorkel while swimming at the surface and the valve is near the bottom so you have to keep your head quite high out of the water, again if you could attach a snorkel that wouldnt be a problem. The head straps need some kind of retainers so the loose ends are held back after tightening and not all flopping around because once adjusted you only need to get at the bottom ones to release the mask, but thats just my opinion as I like to have my equipment all sleek and streamlined without hoses and straps all dangling. Although it may look like it from my review. The pros still by far out-way the cons. Im just being picky. I hope this review helps your descision to buy a full face mask and has the best prices Ive seen anywhere on scuba gear. I live in Canada and had my order in less than a week.

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67 out of 109 people found this review helpful.

Rating: Ocean Reef Neptune Full Face Scuba Dive Mask with 2nd Stage
Reviewer: Gary Shortt
I have been diving for over 40 years,and have never found a mask that I was completely happy with, until now.Although the instructions were a little intimidating,I found that there was nothing to worry about. Not having any time to try the mask out,or receive any formal training before I left for a trip to Barbados,I was a little worried about My first dive with a lot of strangers. I closed the surface air valve,rolled over the side of the dive boat,and everything about the mask performed flawlessly.That first dive and many more after were the most relaxing,and comfortable dives that I can remember.The breathing was effortless,there was no leakage,no jaw fatigue,no fogging and no dry mouth. Kudos to Ocean Reef for designing and engineering such a great product.Althoug the optional swivel joint would be an asset, the quick disconnect is a must,in My opinion. I also want to add that the Pros at were very helpfull in getting the mask to Me on time.They were very pleasant to deal with.I live in Canada and thought that ordering on line might be challanging but it wasnt.Good on You all. Thankyou!

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129 out of 240 people found this review helpful.

Rating: Pure Pleasure
Reviewer: Alan Hughes
I recently used this mask in Key Largo diving to around 100 feet. This mask performed beyond my expectations. I was easy to equalize at depth and the mask never leaked or became uncomfortable or fogged. Its extremely easy to adjust and stays secure with the 6 straps. Visibility was increased and I didnt suffer any jaw fatigue by not having to bite on the reg. When at surface, you open the air value on the right hand side and breath air at the surface. Excellent design and performance. Couldnt ask for better.

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359 out of 690 people found this review helpful.

Rating: full face mask
Reviewer: Richard Spooner  -  View all my reviews
i was very exicited and aprehensive about using the full face mask for the first time with my new third lung but after one minute i was very comfortable...small leaking problem but i could cure that if i would shave my beard everyones @ was very courteous and helpful... thank you guys and i will be buying more equipment from you.

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460 out of 912 people found this review helpful.

Rating: An Overall Great Mask
Reviewer: Gary Twing
I mainly dive off of boats and this mask exceeded my expectations, great field of view, no fogging, no jaw fatigue, easy adjustments, and easy breathing. However, not so great a mask for beach dives. Breathing using the surface air valve while surface swimming was a little labored and got me short of breath. It also fogs up quite a bit but does clear instantly once you close the valve and breath thru the regulator. Ive ordered an Nira Male Quick Connector, sku 028055, to put on my ScubaPro G250 2nd stage so I can easily switch to it for beach dives than back to the Neptune for boat dives. Im looking forward to more boat dives!

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369 out of 703 people found this review helpful.

Rating: Very Nice Mask
Reviewer: blake schoenhals
I realydont have any problems with the mask, other than that none of the paperwork really explains how to clean it. I was told that you need to wipe it down with alcohol pads after every use, because bacteria will grow and potentially cause respiratory infections even if you dont see any kind of growth in the mask it should still be done. Other than that I am very happy with the mask.

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390 out of 759 people found this review helpful.

Rating: See Everything!
Reviewer: Bowen B.  -  View all my reviews
This as a great piece of equipment. No jaw fatigue, no foggy mask, easy breathing and clear views of everything.

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431 out of 867 people found this review helpful.

Rating: Great mask
Reviewer: Micheal P.  -  View all my reviews
Easy to use. I like the mask because it is easy to put on and has a great deal of multi-functions including full vision and adjustable nose plugs. Mike

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444 out of 896 people found this review helpful.

Rating: the mask
Reviewer: George T Lyndall
the mask was everly thing that i hope it would be uw coms worked fine face stay warmer having it now covered up air psi was lower in which lengthen my dive. george lyndall dive instructor

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390 out of 778 people found this review helpful.

Questions and Answers for Ocean Reef Neptune Space Full Face Mask with 2nd Stage:

  • Onn:

    Hi, what is the differences between this mask and neptune space raptor? which one do you recommend?

    Darrick  (Certified Scuba Instructor at

    The Raptor mask only comes in All Black. Where as the Space comes in different colors. As for the sizing they are the same.

  • otrlife:

    how good does it seal with facial hair

    Arthur  (Certified Scuba Instructor at

    Hello, it seals great. 100% better than a conventional mask.

  • ken:

    Whats the difference between the neptune space and the space g divers ?

    Bill  (Certified Scuba Instructor at

    The G Diver is priced better and designed more for recreational divers. The Space is heavier duty and comes with a surface air valve included.

  • Chris:

    can you put the Ocean Reef GSM G.divers Wireless Diver Scuba Communication Unit on this mask at a later date?

    Bill  (Certified Scuba Instructor at

    The diver communications unit can be added later to the mask very easily. It will replace the port plug on the left size of the mask.

  • Neal:

    This model shows a threaded second stage connector on the mask, there is a quick-release adapter available right? What is the price range and where can I get one aftermarket? Thanks!

    Darrick  (Certified Scuba Instructor at

    Hello Neal, if you are looking for the quick-disconnection for this unit. If you go to: If you have any other questions or would like to place an order please feel free to give us a call at 1.800.347.2822.

  • Rajiv:

    Can you get prescription lenses fitted on this full face mask ? Also do you breathe thru your mouth or nose ? How easy is equilising ?

    Reggie  (Certified Scuba Instructor at

    With the Ocean Reef Masks you would need to get the optical lenses support and take the support into your optician for lenses. As far as breathing you can breathe through your mouth or your nose it does not make a difference both ways of breathing are very easy. As far as equalizing once you get your mask fitted it's very easy to equalize. Its just a matter of pressing the mask up against your face to block your nose, not really a drama at all.

  • Brice:

    Does this mask come with a 1st stage or does it need to be added? Also, could you add the Ocean Reef GSM G.divers Wireless Diver Scuba Communication Single Channel Unit tho this mask at a later time?

    Bill  (Certified Scuba Instructor at

    This mask includes the 2nd stage only but can be used with most first stages. Communication can easily be added later.

  • tim:

    Does this mask come with a black or clear silicone inner skirt and nasal skirt. The pics seem to display different ones depending on which ones I have seen.

    Darrick  (Certified Scuba Instructor at

    Hello Tim, the color option you have with the color silicone is All Black, Orange, or Yellow.

Neptune Space Full Face Mask

product code: see chart belowNeptune Space

The OCEAN REEF Neptune Series provides a revolutionary take on the full face mask. They offer great visual fields, superior comfort, reliability, exceptional safety, durability, AND they are easy to use! Whether you are a professional or commercial diver, or just a person who feels like picking up the sport of scuba diving; the OCEAN REEF Neptune Series has a mask tailored just for you!

The Neptune Space is the latest and most innovative mask in the Neptune Series. It has been designed with technical experience gained through 10 years of full face mask manufacturing.

State-of-the-art integrated regulator
Reduced internal volume
Improved visual field; visible light transfer of visor is 92%
Premium grade silicone rubber bellows-type skirt (30-45 mm, double that of a conventional mask)
Durable, scratch-resistant visor
4-position adjustable exhaust valve
Patented 3-D equalization system
Newly designed quick release system
Six strap head harness with low elasticity and FRB (Fast Rotating Buckle), providing firm mask positioning and
quick mask donning and doffing
Integrated surface air valve
Easy access rubber purge button
Techpolymer protection treatments allow for use in extreme conditions
Total weight of 860 g (1.89 lbs) and a positive buoyancy of 400 g (0.89 lbs), providing a light and comfortable fit
Can be used with a communication unit and various Neptune System accessories
Black Space Mask comes in two sizes, medium/large and small/medium
Orange and Yellow Space are available in medium/large
Optional accessory: Special adaptor allowing for connection of several kinds of regulators (two adaptor sizes, medium (standard) and small)
The Neptune Space is specifically designed for professional and high performance applications and comes with a limited lifetime warranty.

The Neptune Space complies with CE Certification in accordance with 89/689/EEC directives under the UNI EN250 standard rules for underwater activities, including low temperatures (<50 degrees F).

1st Stage SL 35 TX

1st stage SL 35 TX (designed for Neptune Space)

High performance balanced diaphragm 1 st stage
Adjustable medium pressure
Made of brass with a satin body finish
Standard connection 200 bar
2 high pressure ports 7/16-20 UNF
4 medium pressure ports 3/8-24 UNF
Flow rate of approx. 4800 l/m at 140 bars

Adaptability – Face seal – sizes

The patented bellows-type skirt with a “spring profile” has a large sealing surface (30-45 mm, double that of
a conventional mask). The spring effect is achieved by a combination of the double “S” section and the inner
support ribs, resulting in a comfortable fit and ample support. This allows the mask to “float” comfortably on
the face. The face seal and strap concepts are OCEAN REEF patents.
The majority of the models may be supplied with two sizes: Small/Medium and Medium/Large.
In order to determine whether a diver should wear a S/M or M/L mask, OCEAN REEF has designed a Mask
Measuring Kit (code 33075).
The sizing and measuring system were designed in accordance with the official measuring procedure used
in the Los Alamos Scientific Laboratory Charts at the SBCCOM Mask Fit Facility-Aberdeen Proving Ground
(Maryland, USA). Before purchasing a mask, use the caliper to take two simple face measurements. Using
the Full Face Mask Size Recommendation Chart, it is possible to evaluate the size category into which the
measurements fall.
There are three different size categories on the chart: Small/Medium, Both, and Medium/Large. If the
measurements fall within the both category, then the customer should technically be able to wear either size
(MEDIUM/LARGE or SMALL/MEDIUM), and in that case they should try on a mask to select the best fit.
Please note that the chart boundaries fade. The fading areas represent less common face measurements. It
is very likely that a mask will still fit comfortably even if measurements are located in these fading areas

Visual field
The Neptune Space visor is made of transparent polycarbonate. It is designed to be wider and sit
closer to the face than previous full face masks. This design maximizes the visual field, particularly
the peripheral area. The visible light transfer of the visor is 92%.
Required field of vision (effective) >40% of the natural field of vision – Space masks 71.80%.
Required field of vision (binocular) >50% of binocular natural field of vision – Space masks 80.68%
Italcert certification PPE-05 Rif 1332/05
The insert photos show the visual field of the Neptune Space compared with two competitor’s full
face masks.
Durability and scratching resistance
The visor of the Neptune Space can resist the impact of a 6.35 mm steel ball traveling at speeds
of 540 kph (335 mph). The visor is coated on both sides with a siloxane resin to increase the
scratching and chemical resistance.
Tested by STANAG 4296 = resistance to the impact of a 325mg metal fragment with a speed of
240 m/s and Impact resistance test: 39.3 mm/254 g sphere from 1300 mm, no cracking or added
protection during transport, the Neptune Space comes with a removable protective shield (to be
removed before diving).
The head harness and FRB II
The head harness is directly attached to the face shield, allowing pressure to be distributed equally along the mask skirt.
The six straps of the head harness hold the mask in a firm position due to their low elasticity. The tip of each strap (rubber)
is wider, making them easier to grasp while wearing neoprene
gloves. The FRB II (Raptor and Space Fast Rotating Buckle) allows the mask to be donned and doffed quickly. Predator and
IRON MASK use an AISI 316 stainless steel with surface electric
treatment and AISI 316 stainless steel rollers.

Air circulation
The Neptune Space air circulation system is designed to minimize fogging and reduce
the amount of CO and CO2 buildup.

The silicone orinasal pocket is built with two one way valves through which air is
inhaled. Exhaled air is directed through a valve under the orinasal pocket, limiting
the mixing of this air (containing high amounts of CO2) with the fresh air from the
regulator. The direction of exhaled air is controlled by a directional exhaust valve. This adjustable valve allows
exhaust to flow in four possible directions:

A - To the left
B - To the right
C - Both (direction of least resistance)
D - No exhaust

Position D, the “off” position is used when the diver is in
a “head-down” position which, due to pressure on the
second stage, causes the regulator to free flow. Placing
the exhaust valve in the off position causes pressure to
build in the mask, preventing free flow and returning
the system to an “air on demand” situation.

Surface air valve

The Neptune Space is equipped with a surface air valve that allows
the diver to breathe ambient air while at the surface. The surface
air valve is easily adjustable with large air vents.

Draining and pressure equalization Water that may seep into
the mask is easily eliminated by exhaling or pushing the
“purge” button on the 2nd stage. Mask squeeze, a common problem for conventional
masks, will not occur with the Neptune Space because the
pressure inside the mask is equal to the pressure outside the mask.
The 3-D equalization system

The patented OCEAN REEF 3-D equalization system is designed to allow easy equalization during a dive. The
system consists of a movable plate and two eccentric blocks (these blocks move close to the nostrils when the
upper part of the visor is pressed). When equipped with Visor Lights (see after), use the regulator to push the
mask toward your face, creating a nasal seal. The blocks plug the diver’s nose allowing equalization.
Before donning the mask, the blocks may be moved up or down depending on the length of the diver’s nose.
They may also be adjusted to fit wide or narrow noses.

The system also includes three pairs of extenders (3,
6, 10mm long) which allow the distance between the blocks and the nose to be modified to accommodate
the diver’s face. The 3-D equalization system makes diving more comfortable and inhibits any undesired pressure during a dive.

Regulator characteristics

The Neptune masks are equipped with a pneumatically balanced second stage providing a consistent ease of breath
at any tank pressure. An inhalation adjustment feature allows the diver to control air delivery under a variety of
diving conditions. The system works with 2 coaxial springs.
The Dive/Pre-dive (Venturi) lever reduces free flow on the
surface and provides maximum air flow while at depth.
The Neptune Space mask complies with CE Certification
in accordance with 89/689/EEC directives under the UNI
EN250 standard rules for underwater activities, including
low temperatures (<50°F/ <10°C).

Ocean Reef Neptune Space Full Face Mask

I’ve always had the impression that full faced masks where far more trouble than they were worth. Over the years I’ve had the chance to fiddle around with them in the pool as well as a few dives when I lived in the Keys, and it always seemed their advantages and novelty was easily countered by the fact that they were uncomfortable, made it difficult to clear your ears and seemed to leak constantly no matter how well they fit topside. And while they offered a fantastic field of view, having such a large airspace strapped to the front of your head seemed to offer various buoyancy challenges as well. It always seemed to me that if you were doing the type of diving that required one, it was an extremely useful piece of gear to have, but just wasn’t the best choice for a recreational diver.

My impressions were changed when I came across the Ocean Reef Neptune Space mask. At first glance I noticed how much lighter it seemed than the old masks I’d tried. Ocean Reef uses Crystal Silicone in the construction of the skirt making it soft and light weight not to mention very pliable so as to give the user a very comfortable seal around their face. Inspecting it closer I noticed that the head harness is connected to the face shield itself allowing the pressure from adjusting the mask to be spread around the entire unit in order to help maintain a tight yet comfortable seal.

Putting it on, one of the first things I noticed was the surface air valve came pre-installed in the unit I was looking at. It is placed in a very common sense spot and with a quick twist I was breathing outside air! This, in this case was important, as the mask wasn’t hooked up to an air source, being in the showroom and all. The equalization plugs were not quite set to match up with my nostrils correctly and I started to wonder if this was going to be an issue. Upon removing the mask, I was happy to see that the equalization system has a tri-dimensional adjustment allowing for an easy adapting to my nose. It took a few minutes to get used to having the little plugs blocking my nostrils but after a bit of practice I didn’t give it a second thought.

When I hooked the system up to my first stage, and took it for a couple dives, I was very pleasantly surprised to discover that the lower part of the seal on the mask slips just under your chin and helps keep the mask secured in place. No more grasping the mask and readjusting it in order to keep it from riding up on your head. The second stage performed very comfortably, delivering air effortlessly and allowed me to breath through either my nose or my mouth. The air circulates inside the mask in a manor that keeps the face shield free from fogging and with exhaust valves located on the sides of the mask; you can set them to have your bubbles go pretty much where you want them. I’m very pleased I wandered across the Neptune Space mask. I’m looking forward to adding the Quick Disconnect hose and fitting to the system to make it easier to store and care for my mask between dives.

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