Features:Jerry program, with Bluetooth / dual decoding support for MP3 / WMA / WAV / bridge music / USB / SD / radio FM / remote control / LINE IN audio input, DC power supply 5V or 12VFirst, the main function1, Jerry program, dual decoding support MP3 / WMA / WAV format music;2, with Bluetooth3, with digital display;4, support MMC / SD / MMA cards, support USB interface (U disk)(not include)5, support radio FM, receive the band (87.5MHZ-108.0MHZ);6, power off memory 24C02;7, support 5-10 meters distance infrared remote control operation;8, support for external audio input LINE IN (AUX);9, buttons: four-button multi-directional control, PLAY / PREV / NEXT / REPEAT / EQ / MODE;Second, the key operation details1, PLAY button (play / pause): PLAY short press for play / pause in FM mode, short press for play / pause in FM mode,2, PREV button (the previous song / volume down): PREV short press in the MP3 state for the previous song, long press for volume reduction, short press in the FM state to raise an alphanumeric;3, NEXT button (the next song / speaker up): NEXT short press in the MP3 state for the next song, long press to increase the volume, short press in the FM state to down a station number;4, REPEAT (repeat): in the MP3 mode, click the single repeat function, click to cancel the repeat function;5, EQ: sound field mode, testing 6 sound quality; (classical) (jazz) (rock) (bass) (popular) (normal)6, MODE button (analog): in order to switch between USB / SD / FM / AUX / Bluetooth;