Ocean Reef GDivers Kit
Ocean Reef GDivers Kit - Cobalt/ Cobalt / S/M (Small / Medium) is backordered and will ship as soon as it is back in stock.
Pickup currently unavailable at In Store
Ocean Reef integrated dive mask sizing. Imperial in bold, metric underneath.
| Size | Nose bridge to chin in · cm |
|---|---|
| S/M |
3.9–4.5 10–11.5 |
| M/L |
>4.5 >11.5 |
How Ocean Reef measures
It is essential to choose a suitable size. You can choose between size S/M (for adults with smaller faces, women and children over 12 years old) and size M/L (for an adult male, or larger faces).
- Nose bridge to chin: Measure the distance between the bridge at the top of your nose and the bottom of your chin.
- Try-on: There are two different size categories on the chart: Small/Medium and Medium/Large. If the measurements fall within the both ranges, then the diver should technically be able to wear either full face mask (M/L or S/M), and in that case should try on a mask to select the best fit. Once the mask is tight on your face, if there is NO SPACE between your chin and the silicone skirt of the mask, you've got the right size.
Source: Ocean Reef’s size chart (original chart). Values in the second unit come from Ocean Reef’s own chart where it prints them.
Ocean Reef GDivers Kit - Cobalt/ Cobalt / S/M (Small / Medium) is backordered and will ship as soon as it is back in stock.
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Product Information
Ocean Reef GDivers Kit is a full face integrated dive mask (IDM) bundle built around the Neptune Space G.divers mask, paired with the GSM G.Divers wireless communication unit and the Extender Kit frame. It is designed for sport divers who want push-to-talk underwater communication along with the fit and breathing convenience of a mask with a balanced, on-demand integrated regulator.
Who it is for
The GDivers Kit suits divers taking their first step into full face masks as well as experienced IDM users who want a customizable platform. Dive instructors, guides, and students on training classes or guided tours benefit from the GSM G.Divers push-to-talk system for extra safety and coordination underwater, and the Extender Kit lets divers add a sport camera or extra lighting as their needs grow.
Key details
The mask uses a polycarbonate visor with siloxane double coating for scratch resistance on both sides, a 6 point harness for a secure and adjustable fit, an exhaust/draining valve, a cold water certified balanced on-demand integrated regulator, and is backed by a 2 year warranty. The GSM G.Divers transceiver runs on a single 9V alkaline battery, delivers approximately 30 hours of battery life in receiving mode, and reaches an operating range of 200 to 250 meters in calm seawater on a single channel push-to-talk system that shares a frequency with other Ocean Reef units. A low battery alarm beeps every 30 seconds when power is low. The Extender Kit adds a protective frame with a flat top surface for mounting a GoPro-style camera, the patented NACS (Neptune Adjustable Communication Support) that distributes the communication unit's weight on the mask, and earphone supports that rotate 30 degrees for use with GSM G-Power SL earphones, side lights, or a sport camera.
Compatibility and sizing
This kit is available in Cobalt, Emerald, White, and Pink/Black, in S/M (Small/Medium) and ML (Medium Large) sizes. The Extender Kit also retrofits onto any Ocean Reef full face mask built from 2006 on that uses a nylon clamping band. The GSM G.Divers can be assembled on all Ocean Reef IDMs; it requires the NACS to mount to the Extender Frame (NACS sold separately).
What's in the box
- Neptune Space G.divers full face mask
- GSM G.Divers wireless communication unit
- Extender Kit frame
- Earphone supports
- Shoulder bag
- Equalization plugs set, 3 sizes
- Screwdriver
- Standard hose
- Warranty registration card
- Ocean Reef stickers
DiveCatalog.com is an authorized Ocean Reef dealer and a dive shop in Irvine, California, serving divers since 2003. Call 888-701-4017 or chat with us for help with sizing, color availability, or compatibility questions.
- Polycarbonate visor: Siloxane double coated on both sides for scratch resistance, reducing the risk of visible scratches underwater.
- 6 point harness: Provides a secure and comfortable fit on the head.
- Exhaust/draining valve: Built into the mask to clear water and exhaled air.
- Integrated regulator: Cold water certified, balanced, on-demand regulator built into the mask.
- 2 year warranty: The mask is covered by a 2 year warranty with warranty registration.
- Wireless communication: The GSM G.Divers transceiver uses a single channel, push-to-talk system that shares its frequency with other Ocean Reef units and most popular wireless communication units on the market.
- Battery life: Approximately 30 hours of runtime in receiving mode on one 9V alkaline battery.
- Operating range: 200 to 250 meters in calm seawater.
- Low battery alarm: Beeps every 30 seconds to warn of low power.
- Camera-ready frame: The Extender Kit's flat top surface mounts GoPro-style sport cameras.
- NACS mounting support: The patented Neptune Adjustable Communication Support distributes the comm unit's weight evenly on the mask.
- Rotating earphone supports: Rotate 30 degrees and double as mounts for GSM G-Power SL earphones, side lights, or a sport camera.
| Mask Type | Integrated Dive Mask (Full Face Mask) |
| Visor Material | Polycarbonate, siloxane double coated |
| Harness | 6 point harness |
| Valve | Exhaust/draining valve |
| Regulator | Cold water certified, balanced, on-demand, integrated |
| Warranty | 2 year warranty |
| Communication Unit | GSM G.Divers wireless transceiver (SKU OR033109) |
| Communication Battery Life | Approx. 30 hours (receiving mode) |
| Communication Operating Range | 200 to 250 meters (calm seawater) |
| Communication Battery Type | 9V alkaline |
| Communication System | Single channel, push-to-talk |
| Extender Kit Compatibility | Retrofits G.divers basic IDM or any Ocean Reef full face mask from 2006 on with nylon clamping band |
| Earphone Support Rotation | 30 degrees |
| Available Colors | Cobalt, Emerald, White, Pink/Black |
| Available Sizes | S/M (Small/Medium), ML (Medium Large) |
- Neptune Space G.divers full face mask
- GSM G.Divers wireless communication unit
- Extender Kit frame
- Earphone supports
- Shoulder bag
- Equalization plugs set, 3 sizes
- Screwdriver
- Standard hose
- Warranty registration card
- Ocean Reef stickers
⚠️ WARNING: This product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.
Frequently Asked Questions
What is included with the Ocean Reef GDivers Kit?
This kit includes the Neptune Space G.divers full face mask, the GSM G.Divers wireless communication unit, and the Extender Kit (frame and rotating earphone supports), plus a shoulder bag, an equalization plugs set in 3 sizes, a screwdriver, a standard hose, a warranty registration card, and Ocean Reef stickers.
Does the GSM G.Divers unit need anything extra to attach to the mask?
Yes. The GSM G.Divers requires the NACS (Neptune Adjustable Communication Support) to mount onto the Extender Frame. The NACS is sold separately.
What battery does the GSM G.Divers communication unit use?
The GSM G.Divers runs on a single 9V alkaline battery and delivers approximately 30 hours of battery life in receiving mode. A low battery alarm beeps every 30 seconds when the battery is low.
What sizes and colors are available for the Ocean Reef GDivers Kit?
This kit comes in two sizes, S/M (Small/Medium) and ML (Medium Large), and four color options: Cobalt, Emerald, White, and Pink/Black. Call or chat with DiveCatalog.com if you need help choosing the right size or color for your face shape.

























