Ideal for:Car,motorcycles,yacht,fishing boats, cuddy cabins, ski boats , the unit is also perfect for spa pools, quad bikes, golf carts,UTV,ATV and RV. Bluetooth music:This RV stereo can connect to Bluetooth and play audio streams from external devices, supporting lDS tag'song reading and power-off memory. USB / AUX Play:Support USB 2.0, Support MP3/WMA/FLAC/ACC APE audio formats IPX5 waterproof:Equipped with IPX5 waterproof design and the latest waterproof technology Uses USB, , AM/FM Bluetooth Audio Sources Impedance:4-Ohms Tuner Section FM Stereo Frequency Area US, Europe 18FM 12AM Presets Bluetooth:long distance music Streaming RMS power output: 4x50W Power supply:DC 12V Source Type:FM,AM,Bluetooth Enabled Marine Radio. Button color: 7colors light. Input Types:Bluetooth, USB,AUX. Outputs:1 pair Pre-Amp Out,One Way Input Color: Silver Material: Plastic+Metal Package Contents: 1 x MP3 Media Player Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.