... fm radio 1.Fit for Kart 3.high vibration resistance 3.Worldwide frequency 4.12V/24V automatical interchange Fixed frequency ... any placesuitable for excavator, kart, tracor, truck, loader,grader,earth moving machineand can be widely installed in: Sumitomo,Komatsu,Hitachi ... -proof ,aseismic and waterproof design, also have a higher resistance to vibration than other radiosAM/FM brand but without CD ...