1. Bluetooth version 5.0 2. Support calling (long press the pause button to answer the call when there is a call). 3. Support recording. Recording only supports operation in TF mode or USB mode.(When recording, you need to connect a storage device, such as: U disk or TF card;) 4. Support power-off memory 5. The power supply voltage supports between DC 7v-22v, and the current is between 1-4A. 6. Can be directly connected to speakers 7. Support song format MP3/WMA/WAV/APE/FLAC 8. Main functions MP3/USB/TF/LINE IN/FM/BLUETOOTH/remote control 9. Power 100W, stereo 2*50W. 10. Support folder selection to play. When USB or TF is playing, there is a folder in the device and there are songs in the folder. Press the previous button or the next button twice to select the folder to play songs, and the screen will display F001-F00? and so on, yes? A folder displays F00? . Model: JX-Y04 (2*50W stereo, power supply 7V-22V) Colour:black Material:plastic Package Contents: 1 x decoder 1 x remote control A 4 x cable Only the above package content, other products are not included. Note: Light shooting 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.