Wireless Remote Access Microphone RAM4W for GX6000Standard Horizon's wireless remote microphone RAM4W specifically for Standard's GX6000 and GX6500.Features:Wirelessly Control all radio functions of the GX6000*Operate up to 4 RAM4W wireless remote stations at a range of up to 65'**Floating / Submersible IPX8 waterproof rating (1.5M or 4.92 feet for 30 minutes)Full AIS target displayInternal 1800mAh Li-Ion battery provides up to 14 hours of usePerform all DSC functions: Individual calling, group calling, Position polling and moreIntercom feature allows you to communicate between the radio, RAM4 and Wireless RAM4W microphonesUnique USB charging systemMOB (Man Over Board) functionWater Activated Emergency Strobe LightLarger high resolution display with bright backlightSupplied with belt clip and lanyardProgrammable hot keys for quick menu access 3 year waterproof warranty*The SSM-71H is only compatible with the GX6000**Operation of the RAM4W requires the use of the SCU-30 Wireless Access Point. When the SCU-30 is used only 1 RAM4 connection will be available on the radio