... radio function 2.Support USB/SD/TF/mmc, up to 8 GB 3.remote control Motorcycle MP3 with FM radioModel number:MK6141 ... Amplifier function, support USB/SD/TF/mmc, Aux, up to 8 GB.4.Remote control vol, play, forward, on/off.5.Power ... .Power supply:12V direct current.7.Speaker quantity:2pcs/set.8.Music:MP3 or WMA.9.Dimension:98mm*36mm*26mm. Payment ...