This is the genuine Yamaha OEM key fob (6ES-82511-00-00) for the original Helm Master joystick control system. Important: It is NOT compatible with the newer Helm Master EX systems (which use a different fob, such as 6X9-86261-10-00). Buoyant, wireless design with lock/unlock and Y-COP anti-theft functionality for the legacy Helm Master setup.