VHF Marine Black Box w/White Command MicBlack Box Transceiver When Space Is At A PremiumIcom's M400BB is a VHF fixed mount with Class D DSC. The M400BB is a spacesaving unit, ideal for owners of compact boats and shipbuilders looking for a black box solution. The M400BB comprises only a black box main body and a supplied COMMANDMIC HM195 remote control microphone accessory. The two-piece radio set can easily be installed behind a wall or console-leaving a small or hidden footprint-and completely controlled from a remote position.Although compact in size, the M400BB possesses the same robust functionality found in Icom's M424 VHF fixed mount. Features include Class D DSC and the COMMANDMIC intuitive soft-key interface design. Active noise cancelling, a 10W loudspeaker and public address (PA) are built in for optimal audio performance. The M400MB is compatible with Icom's MA-500TR AIS transponder for additional safety at sea. Space-Saving, 2-Piece ConfigurationThe IC-M400BB consists of a two-piece, black box configuration. All function control including DSC operation, can be made from the COMMANDMIC , HM-195SW, and the RF unit, IC-M400BB, can be installed in an out-of-sight place.Intuitive User InterfaceThe menu system is shared with Icom's latest models. The bottom line of the dot-matrix display shows the software key functions which can be toggled with the left and right buttons.Active Noise CancellingThe built-in bidirectional active noise cancelling reduces background noise to up to 90% and improves both your transmitted voice and incoming call. Hear and be heard more clearly.10W Loud Audio, Public Addres & FoghornBuilt-in 10W amplifier that increases the audio output from an additional external speaker. The public address function allows you to make an announcement from the microphone like a loud speaker, and the foghorn can also be emitted from the external speaker.Built-in Class D DSCThe built-in DSC watch function monitors Ch.70 (DSC channel) actively, e