Icom M506 VHF/AIS Radio with rear-mount mic, MFG# IC-M506 41, Fixed mount VHF with built-in AIS receiver, 25/1 Watts, with built-in 2-way 25 Watt loudhailer/foghorn, CommandMic-IV capable, Class-D DSC, NMEA 0183, NMEA 2000, and optional voice scrambler.