Includes all channels specified in ITU-RR(NOAA Weather channel) DUAL/TRIAL WATCH function and TAG SCAN function built-in. 20 MMSI number in 3 groups-MMSI number save, edition and call function. Transmission of one’s position and distress message through GPS connection in any emergent case. Big display of channels and 4-line indication of function on big screen. Priority selection of Ch.16 and adoption of noise free mic. Built-in special speaker with high volume. Direct input of frequency by user. Compact & light design for any-where installation.