1. Automatically support USB / TF / Bluetooth / FM / AUX switching. Prompt and convert to cable (signal sound or English voice optional) 2. Support music in MP3 / WMA / WAV format. MP3 songs 32-320kbps, WAV / WMA is 1411kbps or below 3. Support USB / card switching, music, next song, volume control, EQ, play / pause, stop, mute, shutdown, directly select songs. 4. Support Bluetooth previous song, next song, volume control, play / pause, mute. 5. Support power and storage function: turn off the storage before playing the song, and can store the volume to the current position. Breakpoint memory (in playback mode The first time you restore the U disk or TF card will play the breakpoint memory for the first time when the power is cut off after about three seconds) Bluetooth version is version 5.0 Music format: MP3 / WAV / FLAC lossless format music Radio FM frequency: 87.5-107.5 MHZ Support function introduction: support MP3 / USB / TF / LINE IN / FM / BLUETOOTH / remote control Colour:Silver Material:Metal+Plastic Package Contents: 1 * Audio Amplifier Player 1 * Remote control 1 set * Cable Only 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.