ePathChina Car Vehicle Digital MP3 Player 50W x 4 Stereo Power Amplifier FM Radio Receiver Aux Input USB and SD Slot This fixed panel car power amplifier fits for all kinds of 12V cars. 45 seconds ESP electronic shockproof system. It can random play music. It supports 4 channel RCA preamp output. 18 presets memory, can store 18 radio stations (FM: 87.5 - 108MHz). Fixed panel car digital MP3 radio player. Mute control, aux input. 4 channel RCA preamp output. It supports USB connector / SD slot. With digital display screen and digital clock. Screen angle / position memory. It is a FM stereo receiver. With Auto store/preset scan fuction. Preset EQ optional. High or low electronic control.