Ocean Reef Space Extender Full Face Mask w/2nd Stage & Mercury GSM Comm System Option - MAP

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Side view low profile w/GSM Mercury Comm System


Ocean Reef Space Extender Full Face Mask w/2nd Stage & Mercury GSM Comm System Option - MAP


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The Space Extender, is the mask for the avid diver, advanced adventurer and diving professional

  • Cold water certified, balanced, on demand, integrated regulator.
  • Polycarbonate visor (siloxane double coated for scratch resistance).
  • Directional exhaust valve (4 positions).
  • Dive / pre dive switch.
  • Lifetime warranty!
  • Includes the Extender Kit (frame + accessories).
  • This IDM has it all right off the bat. 
  • A fully customizable product that can serve all your needs and grow with your preferences thanks to a full line of accessories that can be integrated at any time with your mask.
  • Equipped with a surface air valve (SAV) that allows the diver to breathe ambient air while at the surface.
NACS was built with the possibility of breaking (for engagement reasons) in mind. Our customers (not everyone) didn’t like the fact that it could break – they preferred something sturdier and more reliable. We created the Extender to solve this problem too. The concept is the same as the old NACS, but it’s now a solid piece with the frame. this distributes the weight perfectly along the mask AND is comfortably located and rigid so that it does not flap on your ear when moving.

The frame has a flat, trapezoid shape, specifically made for sport camera stickers, or to drill holes and fix lights to it.


These earphone supports serve multiple purposes. First of all you have 2 of these. You can mount either one, or both together. When mounting both, you will have to renounce to the new NACS. These are the natural fittings for the earphones (MHA-2) of the GSM G-Power SL communication unit, once complete, this systems let’s you enjoy a double speaker system, with volume control and extra range. Either having or not the GSM G-Power SL unit, the supports, once the plug is inserted, can serve as sport camera supports (such as the GoPro camera) – the shape is that of the sticker for this popular camera, and you can then figure out a 90° angle arm. Or, you can just drill holes in the plug, and mount whatever you want to them. The plugs rotate 30° vertically, which means, anything you attach to them will be able to do the same! for example – a light!


It comes with

  • A padded bag to protect and carry your IDM
  • Warranty Registration – Limited Lifetime Warranty with these babies!
  • The full Extender Kit (frame + accessories – frame is already mounted).
  • Equalisation plugs set. 3 sizes.
  • Screwdriver.
  • Standard Hose.
  • Stickers to show off you’re an OCEAN REEF addict.
Add Optional Communications

Mercury GSM blends four different OCEAN REEF units into one: the extended range of the Gpower, the like-stereo sound of the GSM SL, the clearness and double channel option of the DC and the battery life of the Gdivers.

Key Features:
  • It’s foldable inside the mask. Now you don’t need to assemble the comm unit and take it off the mask. Simply fold it close and pack the IDM.
  • Brand new rechargeable, changeable battery with an autonomy of approximately 30 hours. No need to purchase disposable batteries to throw away once they are done. No need to purchase batteries before a dive trip. Recharge with a standard micro USB cable from any power source you want.
  • Digital as the first ever unit we introduced in the market – the DC. This one adds clearer communication, with a higher volume AND 2 earphones for a stereo-like experience.
  • Double channel unit for separate teams/conversations, depending on the surrounding environment conditions, it exceeds a range of 800ft /250 meters.
  • DAT (Digital Activation Transmission) – hands-free mode.
  • Compatible with all prior OCEAN REEF units and competitor units on same frequency.
  • Easy and solid new PTT button. Also includes the D-mic 2.0 which is now incredibly simple to swap out if needed. Button module doesn’t create entanglement and can be operated via a yellow flat, sturdy button and easy lever. As intuitive as you would want it.
  • Voice menu that is clear and immediate to learn, matches perfectly the simplicity of the buttons.
  • 3 level volume.


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