Ocean Reef GSM Dual Channel Scuba Communication Unit

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• Features a digital driver for vocal message equalization, an automatic system for activating (DAT) transmission and a double transceiver channel
• The standard frequency (channel one) is the same for all units, so it is possible to talk directly with any other GSM DC, GSM DAT, GSM, M-101A receive units, surface M-105 Digital units and all previous surface systems (M103 - M104 - M105)
• The double channel allows two different diver groups to operate in the same area, limiting the interference between them
• FULL MANUFACTURER'S WARRANTY