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 MP3/WMA/WAV//FLAC 8. Main functions MP3/USB/TF/ IN/FM/BLUETOOTH/remote control 9. Power 100W, stereo 2*50W. 10. Support folder to play. When USB or TF is playing, there is a folder in the device and there are in the folder. Press the previous button or the button twice to select the folder to play , and the screen will display F001-F00? and so on, yes? A folder displays F00? . Model: -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 are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.