The Icom M400BB is perfect for boats that need a radio but have limited space at the helm. The M400BB consists of a two-piece black box configuration. Install the complete black box RF unit out of sight and connect the COMMANDMICIV™, HM-195 to the cockpit or fly bridge. The HM-195 enables operation of all radio functions, including DSC, radio, and horn. The HM-195 also utilizes the same user-programmable key interface as used on the latest range of Icom marine radios for easy operation.