1. Support USB / TF / Bluetooth / FM / AUX automatic switching. 2. Support MP3 / WMA / WAV format music. 3. Support USB / card switching, music, next song, volume control, equalizer, play / pause, stop, mute, stop, direct song selection. 4. Support Bluetooth previous song, next song, volume control, play / pause, mute. 5. Support power and storage function: turn off the song storage and can store the volume at the current position. Breakpoint memory (in playback mode, the time you restore the U disk or TF card will play the breakpoint memory for the time when the power is off after about three seconds) Version: Bluetooth 5.0 Power: 2x15W FM radio frequency: 87.5-107.5MHZ Support function introduction: support MP3 / USB / TF / LINE IN / FM / BLUETOOTH / remote control / DC5 -12V color: silver + black Material: ABS + metal Size: 108x73x30mm Package Contents: 1 x Amplifier Board 1 x Remote Control (without battery) Only the above package content, other products are not included. Note: