Characteristic: 1 Support mp3 / wma / WAV / FLAC / ape; Support Bluetooth 5 0;2 Digital tube display; Support USB / TF (SD) / Bluetooth / FM / aux and other modes;3 Support folder playing; Support 5-10m far infrared remote control operation;4 Support external audio input line input (aux); Support radio frequency modulation, receiving frequency band (87 5mhz- 108 0mhz);5 Button: four button multi direction control, vol - / Auto / vol + / mode;Operation details:1 Vol - (previous song / volume reduction): in MP3 mode, short press of vol is the previous song and long press is volume reduction; in FM mode, short press can adjust a radio station number; in Bluetooth mode, short press is the last song of Bluetooth and long press is volume reduction 2 Automatic (play / pause): in MP3 state, short press Auto to play / pause; in FM state, short press to play / pause, long press to receive and save automatically; in Bluetooth function, short press to play / pause 3 Vol + ( song / volume increase): in MP3 mode, short press one song and long press to increase the volume; in FM mode, short press to adjust the radio number; in Bluetooth mode, short press to song and long press to decrease the volume 4 Mode: USB / TF (SD) / FM / Aux / Bluetooth function switchingsize: 75 x 50MMMaterial: Plastic + Metalcolour: WhitePackage Contents:1 x decoder board1 x remote control (without battery 1 x button battery)1 set x wiresOnly 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