Ocean Reef Neptune Space G Full Face Mask

Availability: In Stock
The Neptune Space G.divers mask is available in 2 sizes and 4 color options and includes an integrated balanced 2nd stage regulator with a 3/8" threaded 31.5" (80cm) low pressure...
Availability: In Stock

Key Features

Perfect full face scuba mask for the recreational diver
Integrated second stage within mask
Highly customizable with add-ons
Proper training required before use  

Product Overview

Designed for recreational diving, guiding and teaching, this high performance mask is ideal for both those looking to try full face mask diving for the first time as well as experienced divers looking for an exceptional value.

Ocean Reef’s pneumatically balanced, integrated second stage regulator provides consistent ease of breath at any tank pressure. The inhalation adjustment knob allows divers to control their air delivery. The Neptune Space G. full face mask can also be equipped with an optional Surface Air Valve (SAV) that will allow divers to breathe ambient air while at the surface.

The patented bellows style face skirt, molded from premium grade silicone rubber, uses a ‘spring profile’ and large sealing surface to achieve a very comfortable fit and ample support. This spring effect is a combination of the double “S” section and the inner support ribs which allows the G. Divers mask to ‘float’ comfortably on the face. The head strap 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 rubber strap is wide, making them easy to grasp while wearing gloves. The fast rotating buckle allows the mask to be donned and removed quickly, simply pull the quick release tabs on the bottom of the mask to remove. The unique face seal and strap concepts are Ocean Reef patents.

The streamlined visor, made of transparent polycarbonate and treated with a scratch resistant resin, is designed to be wider and sit closer to the face than previous full face masks, maximizing the visual field, especially in the peripheral area. The visible light transfer of the visor is 92%. These factors give divers and astonishingly clear view of the underwater world.

The Neptune Space G. Divers air circulation system is one of a kind and is designed to eliminate 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 and out of the mask. This limits the mixing of used air with the fresh air coming in from the regulator.

Water that may seep into the mask is quickly eliminated through exhalation or pushing the purge valve button in the second stage. Mask squeeze cannot occur with the G. Divers mask because the pressure inside the mask is always being equalized to the pressure outside.

Ear equalization is a breeze with the Neptune Space G. Divers patented 3-D equalization system. The system consists of a moveable plate and 2 eccentric blocks, which may be moved up or down and in or out to adapt to a variety of nose shapes. Included are three pairs of extensions, allowing the distance between the blocks and the nose to be modified. Simply adjust the silicone blocks to sit right under the nose, and then push back on the mask to block the nostrils on descent and equalize the ears.


The Ocean Reef G. Divers mask can be outfitted with a variety of optional accessories. The Surface Air Valve saves tank air while at the surface. An optical lens support allows for vision correction. Visor lights can provide hands free illumination. An Extraflex Quick Connect hose allows you to easily remove the mask from the 1st stage regulator set up, and a swivel can provide freer movement. Also available is a high performance 1st stage with a balance diaphragm and anti-freeze kit.

The Neptune Space G.divers mask is available in two sizes and four colors (white, emerald, cobalt and pink) and includes an integrated, balanced 2nd stage regulator with a low-pressure hose.

Warranty Information

This product has a limited warranty of 24 months.


  • Easy breathing through your nose or mouth with a balanced, adjustable 2nd stage built in-no jaw fatigue
  • The Neptune Space G. Divers is the latest and most innovative design from Ocean Reef
  • Air circulation across the visor keeps the mask from fogging
  • Patented 3-D Equalization system adjusts in multiple ways to make ear clearing easy
  • Patented bellows double S shaped skirt is made from a premium grade silicone, making it comfortable and giving a large sealing surface
  • Nitrox compatible to 40% (the recreational limits of nitrox)
  • Six strap head harness keeps the mask firmly in place on the face
  • Quick release pulls allow for easy mask removal
  • Durable, scratch resistant visor with the widest field of vision on the market
  • Includes a standard hose to connect with the 1st stage
  • Optional Surface Air Valve available - breathe ambient air at the surface and save tank air 
  • Additional accessories can be added, such as an optical lens support, visor lights, swivel or quick connect hose
  • COLORS: Cobalt, White, Pink or Emerald
  • SIZES: Medium-Large Faces (110 lbs.+) or Small-Medium Faces (50-110 lbs.)
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Key Features

• Perfect full face scuba mask for the recreational diver
• Integrated second stage within mask
• Highly customizable with add-ons
• Proper training required before use  

What's in the Box

• Full Face Mask with 2'nd Stage Regulator
• Low Pressure Hose and Owner's Manual


Mask: -----
Window Style 1-Front
Mask Materials Silicone
Lens Material Polycarbonate
Head Strap Design 6 Strap Spider
Regulator Compatibility Ocean Reef 2'nd Stage Regulators
Regulator: ----
Adjustable 2'nd Stage Yes, Adjustable Breathing Resistant Knob
2'nd Stage Type Pneumatically Balanced
Regulator Materials Plastic, Chromed Brass, Silicone and Stainless Steel
Hose Thread 3/8
Hose Length 31.5 (80cm)
Total Weight 1.89 lbs (860g)

Customer Reviews

Customer Reviews

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Ocean Reef swivel/quick disconnect and hose