1. Automatically support USB or TF or Bluetooth or FM or AUX switching. Prompt and convert to cable (signal sound or English voice optional) 2. Support music in MP3 or WMA or WAV format. MP3 songs 32-320kbps, WAV or WMA is 1411kbps or below 3. Support USB or card switching, music, next song, volume control, EQ, play or pause, stop, mute, shutdown, directly select songs. 4. Support Bluetooth previous song, next song, volume control, play or 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 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 or WMA or WAV or FLAC or APE lossless format music Power: 2 x (40) W, connect 2 (40) W speakers Radio FM frequency: 87.5-107.5 MHZ Support function introduction: support MP3 or USB or TF or LINE IN or FM or BLUETOOTH or remote control Colour:black Material:plastic Size:about 75 x 50mm Package Contents: 1 x decoder 1 x remote control 4 x cable Only the above package content, other products are not included. Note: Light 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.