The GSM G. Divers communication unit makes the perfect addition to any training class or guided tour, for extra safety and for fun!

- Wireless underwater transceiver unit

- Approximately 30 hours in receiving mode

- Range of operation of 200-250 meters (in calm seawater)

- Lightweight, powerful single-channel, “push to talk” communication system

- Operates on the same frequency as all other OCEAN REEF units as well as the other wireless communication units on the market.

- Uses a 9V alkaline battery and has a “low battery” alarm which beeps every 30 seconds when the battery is low.