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Ocean Reef GSM G.Divers Communication System - Yellow

Ocean Reef IDM  |  SKU: OR033109
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Product Information

The Ocean Reef GSM G.Divers Communication System is a wireless underwater transceiver unit with push-to-talk voice communication for training classes and guided tours. It offers approximately 30 hours of autonomy in receiving mode, an operating range of 200 to 250 meters in calm sea water, and a single-channel, push-to-talk design, and it is available in yellow.

Who it is for

This unit suits dive instructors running training classes, dive guides leading groups, and buddy teams who want an added layer of safety and convenience underwater. Because it operates on a shared frequency with other units, it works well for mixed groups where not everyone is using the exact same Ocean Reef model.

Key details

  • Range of operation: 200 to 250 meters in calm sea water.
  • Autonomy: approximately 30 hours in receiving mode.
  • Communication type: single channel, push to talk (PTT).
  • Battery: 9V alkaline, with a low battery alarm that beeps every 30 seconds once power is low.
  • Frequency: operates on the same frequency as other OCEAN REEF units and most popular wireless communication units on the market.
  • Weight: lightweight design for comfortable use with your Ocean Reef IDM.

Compatibility and sizing

The GSM G.Divers can be assembled on all OCEAN REEF Integrated Dive Masks (IDMs). Installing it on the Extender Frame requires the NACS (Neptune Adjustable Communication Support), which is sold separately.

DiveCatalog.com is an authorized Ocean Reef dealer and a dive shop in Irvine, California, operating since 2003. Call or chat with us at 888-701-4017 if you have questions about fit, compatibility with your IDM, or whether you need the NACS accessory.

⚠️ 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

Does the GSM G.Divers work with other brands of wireless dive communicators?

Yes. The GSM G.Divers operates on the same frequency as other OCEAN REEF units and most popular wireless underwater communication units on the market, so it can typically communicate with divers using compatible units from other setups, making it practical for mixed groups.

What battery does the GSM G.Divers use and how will I know when it needs changing?

It runs on a single 9V alkaline battery and provides approximately 30 hours of autonomy in receiving mode. A built-in low battery alarm beeps every 30 seconds once the battery charge gets low, giving you a clear warning to swap it out before your dive ends.

Do I need any extra part to mount the GSM G.Divers on my mask?

Yes, to install the GSM G.Divers on the Extender Frame you need the NACS (Neptune Adjustable Communication Support), which is sold separately. The unit itself can be assembled on all OCEAN REEF Integrated Dive Masks (IDMs).

How far can I communicate underwater with the GSM G.Divers?

The GSM G.Divers has an operating range of 200 to 250 meters in calm sea water. Actual range can vary with water conditions, so divers and buddy teams should stay within a reasonable distance for reliable, clear push-to-talk communication.