Ocean Reef GSM Cube3 Full Face Snorkel Mask - Anti-Fog, Anti-Leak Design for Adults & Kids - Perfect for Swimming, Snorkeling, and Beach Vacations

It’s the most versatile unit possible. Capable of communicating in three different ways: wireless, hard wired, VHF.

It can be connected to the ALPHA PRO X DIVERS surface unit for cable hardwired communication – full duplex, hands free communication.

The unit is a permanent wireless unit. Always on receiving mode for any communication on channel 1 frequency. PTT button activates wireless transmission on channel 1. Six-pin waterproof connection permits connecting and detaching from cable communication while underwater.

GSM CUBE3 can be connected to a separate unit in order to interface with a VHF radio and permit radio communication while on the surface.