Ocean Reef Neptune Space G.divers Full Face Mask OR025016 029940


Mfg Part #: OR0250

Ocean Reef Neptune Space G.divers Full Face Mask

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  • Redesigned Neptune Space G.Diver Mask with 2nd Stage
  • Free Mesh Carry Bag included
  • Free Visor Protector
  • Nitrox compatible to 40% (the recreational limits of nitrox)
  • The Neptune Space G.Diver is the latest and most innovative
  • Easily adaptable for a octopus regulator 
  • 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
  • New G.Diver 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
  • Will work with optional Surface Air Valve (see below to order)
  • Can be adapted for a octopus 2nd stage
  • COLORS: Cobalt, White, Pink or Emerald
  • SIZES: Small/Medium or Medium/Large - see size chart below

Customer Reviews for Ocean Reef Neptune Space G.divers Full Face Mask:

See the top 20 most helpful scuba gear reviews

Average Customer Review: based on 4 reviews.

Rating: Ocean Reef Neptune Space G.divers Full Face Mask Review - $642.95 - Scuba Gear Customer Reviews
Reviewer: Gerald Robinson  -  View all my reviews
while i dont currently have a full opinion of the ocean reef neptune space g.divers full face maskim still using a far greater amount of air as compared to a regular regulator and face mask, i very happy with the savings that buying "demo" provided. i noticed no wear on the masks and all of the extras came with the masks. (lph, warranty, carrying bag, etc.)

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3 out of 6 people found this review helpful.

Rating: Ocean Reef swivel/quick disconnect and hose
Reviewer: Harry Eeuwes  -  View all my reviews
This is a great mask with a lot of adjustments for comfort and ease of use. Found the You Tube video demos were a great help in making all the nose adjustments for comfort as I have a long big nose. Now the mask works great and I can equalize without even touching the mask. I love to yell at my buddies and they can hear me - that is pretty fun. It does scare the fish though if you are taking pictures. This is a whole better way to dive. I am so glad I took the step even though its pricey I love my FFM Harry Eeuwes CAN

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25 out of 38 people found this review helpful.

Rating: Ocean Reef Neptune Space G.divers Full Face Mask Review - $642.95 - Scuba Gear Customer Reviews
Reviewer: Corinthia J.
This is a great mask! The low profile provides a very low impact on positive buoyance. I have used more expensive full-face masks in the past and this one out performs them. No complaints...

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7 out of 10 people found this review helpful.

Rating: GOOD
Reviewer: miss c.

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41 out of 103 people found this review helpful.

Questions and Answers for Ocean Reef Neptune Space G.divers Full Face Mask:

  • Mauricio:

    Could I use my first stage regulator (Cressi)?

    Darrick  (Certified Scuba Instructor at

    Hello Mauricio, this mask already comes installed with the 2nd stage regulator. As for your 1st stage yes you can use that with this. If you want to install your own regulator in the mask you would need to order the Ocean Reef Neptune II Full Face Scuba Dive Mask Only web link: If you would like to place an order or have any other questions please feel free to give us a call at 1.800.347.2822.

  • Jordi:

    Hi, What is the difference between Ocean Reef Neptune Space G.divers Full Face Scuba Dive Mask and the Reef Neptune Space Full Face Scuba Dive Mask with 2nd Stage? In the web, they show different prices. thanks jordi

    Darrick  (Certified Scuba Instructor at

    Hello Jordi, the Space G. is there 2012 version of there full face mask. The Neptune Space is there older model. Also the Space G comes in different colors. Also the Space G was designed to work around the regulator where the Neptune was designed for the add-on's with the mask. 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.

  • lance:

    I have always cleared my ears by pinching my nose and have used EXO full face masks in the past. For some reason pushing the aga nose cone into my nose I cant clear. Can you recommend any masks that would allow me to pinch my nose or any techniques that would help clearing w the aga? -Thanks

    Darrick  (Certified Scuba Instructor at

    Hello Lance, you would need to adjust the nose pieces so you can push down on the nose piece to clear. When it comes to full face masks. You are not able to clear your nose by pinching your nose you would have to adjust the built in part that comes with the mask.

  • jeff:

    just wondering if the space or space g will work with air tanks or supplied air only thanks

    Darrick  (Certified Scuba Instructor at

    Hello Jeff, if you have the correct connection to the mask you can run this on either a tank or threw surface supplied air. If you would like to place an order or have any other questions please feel free to give us a call at 1.800.347.2822.

  • Chris:

    Im confused. Why is the First Stage regulator called an upgrade? Do you need to buy this to be able to hook this mask up to a hose from a tank, or is there a regulator built into the mask?

    Darrick  (Certified Scuba Instructor at

    Hello Chris, the Mask and 2nd stage (regulator mounted into) mask is all one item. If you need a 1 stage (the item you mount to the tank directly) is a seperate item. They reason they do this is because you can use your 1st stage if you have one instead of the 1st they sell. They can be mixed and matched to any 1st stage. If you have any other questions please feel free to give us a call at 1.800.347.2822.

  • gilou:

    hi does the second stage have a diver adjustable airflow and does it come with a hose . how much time would it take to ship to lebanon

    Greg  (Certified Scuba Instructor at

    Yes, the second stage regulator on the Ocean Reef mask is adjustable and it comes with a second stage hose that can be attached to the SCUBA divers first stage regulator. Typical international delivery dates are 1 – 2 weeks. Expedited shipping is available.

  • coeltin:

    can it be used with nitrox up to 40%, or what is its limits? also can I get the mask without 2nd stage?

    Bill  (Certified Scuba Instructor at

    This mask is rated up to 40% nitrox. It is not recommended to order the mask without the second stage as it is difficult to tune a regulator for the full face mask.

  • Joe:

    I have never used a full mask before and was wondering if the plastic above to regulator is soft so you can clear your ears, if not how do you go about clearing them. Also when connecting the mask to the 1st stage does it use a quick connect or does it separate from the rest of the octopus because Im not sure my dive bag would have enough room to fit the mask and octopus together. Last question is some times when I dive I use a flashlight that attaches to my goggles would I be able to attach that to the mask without the flashlight being slanted away from where Im looking or would it fit straight ahead like on my goggles?

    Bill  (Certified Scuba Instructor at

    It will probably be easier for you to go to Oceanreef's site. They have instructional videos that show how the mask works. The mask replaces the primary second stage on your regulator hose, so the octo you are using does not change. Clearing is done by pressing the mask against your face so 2 soft plugs in the mask can block your nose to clear.

  • Nick:

    Product information states newly redesigned. Is this model different from the 2012, if so how?

    Bill  (Certified Scuba Instructor at

    Not new for 2013, but is the new "G Diver" series which is designed for recreational diving.

  • Fabio:

    Hi, What is included in this mask? It includes the regulator and hoses, or only the mask?

    Bob  (Certified Scuba Instructor at

    Ocean Reef masks are built around their 2nd stage. It'll be the mask/2nd stage and the regulator hose. It does not come with the 1st stage, swivel connection or Surface Air Valve.

  • Ashraf:

    Hello, Actually I have two questions.. the first is why your price is way cheaper than while both of you sell the same mask with the same specifications and actually is the source supplier to Amazon for this kind of mask? My second question is: Do you ship to Jordan and if yes, how long does it take to delivery? If you dont ship to Jordan then how long does take to ship to a USA address?

    Bill  (Certified Scuba Instructor at

    Pricing can change every day. As long as you can add the item to shopping cart and it shows that price at checkout, that will be the price and will come with a full warranty. You can place the order on the website. Using Amazon Checkout is the easiest way to process international orders. The shipping charge will be listed when you proceed to checkout and prior to submitting the order. Order are typically delivered within 2 weeks from the day it processes.

  • Julie:

    I have a facial deformity and have had a terrible time finding a mask that does not leak on the left side of my face or is so snug, I end up with a blister on the bridge of my nose. Would a full face work and fit better?

    Darrick  (Certified Scuba Instructor at

    Hello Julie, Yes it would be a better fitting mask for you and should not have the blister issue on the bridge of the nose.

  • Charles:

    Hi I have have a pair of scuba goggles and I find them very uncomfortable to wear I seem to not always get the right tightness to fit and the other issue with the goggles is they are not torn anywhere but if I have them not tight enough water will go inside them and I have issues with purging the water out I feel sufication when I do purge the and if I have the goggles tight it starts to cause discomfort and I was wondering is the full face mask more comfortable then the goggles and I live in Canada and I was wondering would I have to pay in american or Canadian money and if I do get the Ocean Reefs Neptune Space G divers Full Face Mask how Long would it take to get to St Thomas Ontario Canada and would you guys accept Money order and I could give you guys my info for the payment and does the mask come with instructions on how to set it up or is it already set up and I would have to set it to my fitting for my face because I am going for my Recreational divers certification and I want a mask that is comfortable and later on down the road I want to be able to talk to other divers but all I would like is to be comfortable without a problem and my snorkel gets in the way and that is the other reason I was asking about the Full face Mask

    Bill  (Certified Scuba Instructor at

    You can place the order on the website. Using Amazon Checkout is the easiest way to process international orders. The shipping charge will be listed when you proceed to checkout and prior to submitting the order. You can add items into the shop cart proceed to check-out to get a total for shipping and the product. Fill out the billing and shipping info and select call for payment. Make a note in the special instructions that you are sending a money order. All prices are in US dollars. Delivery is at least two weeks for the day the order processes.

  • Joshua:

    What size is the LP hose connection? will standard LP hose work?

    Bill  (Certified Scuba Instructor at

    Hoses are standard length. Any standard 2nd stage hose will fit the mask.

  • Adam:

    Hello! My dad had a really bad experience scuba diving a few years ago and now he has panic attacks while diving. he said it he would be fine if he could breathe through his nose and mouth. is this the mask for him? Thanks!

    Darrick  (Certified Scuba Instructor at

    Hello Adam, yes if he is looking for a mask that he can breath thru his nose. Any full face mask will let you do that.

  • Ken:

    I am interested in a full face mask (FFM) the Ocean Reef G. But would rather use my scubapro 1st and 2nd.. is that possible? Also I have a Air II, so how would that change things?

    Bob  (Certified Scuba Instructor at

    Unfortunately no. The Ocean Reef masks are proprietary to and built around the Ocean Reef 2nd Stage. The use of the Air II becomes more tricky, although not unlike using any other octo. It doesn't incorporate into the mask so in a regulator failure that would cause you to use your alternate air source, you'll be removing your mask to breath from the Air II. In the case of a buddy needing your octo in an Out of Air Emergency, they'll either have to be happy being VERY close to you, breathing from the Air II while you attempt to use your inflation functions OR (my recommendation) add a standard octo to your set up when using the FFM.

  • Scott:

    Does this mask come with the surface air vlave?

    Darrick  (Certified Scuba Instructor at

    Hello Scott, no the surface air valve is an add-on option.

  • Kelly:

    Hello! I am interested in the Ocean Reef Neptune Space G.divers Full Face Mask. I currently do not own any scuba equipment and am tired of renting used gear. What all would I need to purchase to use this mask with a rented BCD. I am looking to invest in everything but doing so little by little. Thanks!

    Arthur  (Certified Scuba Instructor at

    Hello, you would just need the first stage.

  • Leslie:

    Got a used instruction-missing Ocean Reef f-f mask for a friend. Model cco475 with Niro Neptune regulator. Curious what the side-set Open/close valve is (red/green letters)...and what the "thin bar" (red one side, green other) is for. Also: if missing one of the soft caps by persons nose need get one or both get taken off when diving and so not important. Thanks re any reply.

    Bob  (Certified Scuba Instructor at

    The valve you are asking about is called the Surface Air Valve. It allows the wearer to breath outside, ambient air on the surface as opposed to using the air from their cylinder.

  • david:

    looking at Neptune ll mask no size just no. 033001 804003 the second no written in can u help

    Bob  (Certified Scuba Instructor at

    We are unsure from your post what your question is. Please forward it to

  • Andrew:

    On the Neptune. Scuba pro full face mask 1) do you need to buy a different 1st and 2nd stage 2) is there anything else you née d to buy above the $675 price ? Thanks for the answers.

    Darrick  (Certified Scuba Instructor at

    Hello Andrew, this comes with the 2nd stage and 2nd stage hose built into the mask. You would need to attach this to a 1st stage to supply air. Other that that no you to not require anything else to use this mask.

  • Mary:

    I attempted scuba diving once but was unable to make it past the pool practice due to panicking from being unable to breathe through my nose as well as my mouth. This looks like a solution to my problem, but would it be a waste of money to buy this mask and only use it with rented gear from resorts we visit on vacation and would the mask be compatible with the standard gear provided?

    Darrick  (Certified Scuba Instructor at

    Hello Mary, yes this would connect to any 1st stage regulator set-up. Any dive shop will be able to attach this unit to the gear you are renting. This unit does take a special class above the standard open water class. So I would contact your local dive center and see if they also teach this.

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


More About the Neptune Space

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).

View all Ocean Reef Masks

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