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Open Box Ocean Reef M100 Portable Transceiver Surface Unit

Ocean Reef IDM  |  SKU: OCRE-33165+OB
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Condition Note

May be missing original packaging and minor blemishes (not noticeable after 1-2 dives). This product does not carry a valid manufacturer warranty.

Product Conditions

  • Open Box: This product is Open Box. It is generally unused, either returned by a customer or displayed in our showroom, and may have minor, unnoticeable blemishes. Original packaging may be damaged or missing.

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Product Information

The M100 G.divers is a portable surface transceiver unit designed for easy communication with divers in action. This compact unit can be worn on the operator's belt and is similar in size to a cellphone. It features a PTT button and a headphone/microphone connector, turning on automatically when connected and off when disconnected. With a 10 meter transducer cable that can be controlled for depth, this unit operates on one channel and uses a replaceable alkaline battery with approximately 9 hours of autonomy. Its range of operation is approximately 200 meters.

⚠️ 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 battery does the Ocean Reef M100 surface unit use?

The M100 runs on a single, replaceable 9V alkaline battery. According to the manufacturer's specifications, a fresh 9V battery provides approximately 9 hours of operating autonomy, so operators running longer dive days should carry spare batteries.

How far can the M100 communicate with a diver?

The M100 has a stated communication range of approximately 200 meters (600 feet) between the surface unit and the diver, operating on a single channel. Actual range can vary with water conditions and how the 10 meter transducer cable is positioned.

Does the M100 work with Ocean Reef's underwater receiving units?

The M100 is a surface transceiver for talking to divers. Contact DiveCatalog.com at 888-701-4017 to confirm the underwater unit pairing for your setup.