Car 12V Color Screen Audio MP3 Player Decod er BoardMain function: 1. Jerry solution, dual de supports MP3 / WMA / WAV format music 2. With Bluetooth 3. With digital tube display 4. Supports MMC / TF / MMA cards, USB interface (U disk) 5. Support radio FM, cable receiving frequency (87.5MHZ-108.0MHZ) 6. Power-off memory function 24C02 7. Support 5-10 meters infrared remote control operation 8. Support LINE IN (AUX) 9. ons: Four-on multi-directional control, PLAY / PREV / NEXT / REPEAT / EQ / MODE Key operation details: 1. PLAY on (play / pause): PLAY short press in MP3 state is play / pause, short press in FM state is play / pause, long press is automatic closing and saving station 2. PREV on (previous song / turn down the volume): In the MP3 state, a short press of PREV will be the previous song, a long press will decrease the volume, and a short press in the FM state will increase the station number by one. 3. NEXT on (next song / speaker up): In the MP3 state, a short press of NEXT is the next song, a long press is to increase the volume, and a short press in the FM state is to down a station number. 4. REPEAT (repeating): single click in MP3 status for repeat function, single click to cancel repeat function 5. EQ: sound field mode, test 6 kinds of sound quality: classical, jazz, , bass, pop, normal 6. MODE on (analog): switch between USB / SD / FM / AUX / Bluetooth sequentially