1. Bluetooth version 5.0 2. Support 6.5MM microphone. 3. Support music backing vocals to the for original-sound. 4. Support call (long the pause button to answer the call when it comes). 5. Support recording. Recording only support TF mode or USB mode operation.(Long the MODE button to start recording, long the MODE button again to cancel recording and play the recording file; long the pause button to exit the recording mode. When recording, you need to connect a storage device, such as: USB flash drive or TF card) Support power failure memory. Power supply voltage support between DC 8V-26V, current between 2-5A. Can be directly connected to the speaker. Support song format MP3 FLAC. Main functions MP3/USB/TF/LINE IN/FM/BLUETOOTH/Remote control Power 200W, left and right channel 100W each. Colour:As Shown Material: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.