THIS PRODUCT COMES COMPLETE WITH FULL MANUFACTURERS WARRANTY

*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 *SCUBA diving equipment