1. Main function MP3/USB/TF/LINE IN/FM/BLUETOOTH/remote control 2. Support calls (long press the pause button to answer the call when there is an incoming call). 3. Support recording. Recording only supports operation in TF mode or USB mode. (Long press the MODE button to start recording, long press the MODE button again to cancel the recording and play the recording file; exit the recording mode and long press the pause button to exit. When recording, you need to connect a storage device, such as: U disk or TF card;); support interrupt Electrical memory 4. Can be directly connected to speakers, with power amplifier and decoding functions. 5. Support song format MP3 /WMA / WAV / APE / FLAC Description specifications: Bluetooth version: 5.0 Power supply voltage: DC6v-12v Current: 1-3A Power: 50W True stereo: 2 x 25W. colour:Black Material:abs Size: 92 x 41MM Package Contents: 4 x decoder board 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.