1. Bluetooth version 5.02. 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;)4. Support power off memory. The power supply voltage supports between DC6v-12v, and the current is between 1-3A. Can be directly connected to speakers, with power amplifier and decoding functions.5. Support song format MP3 /WMA / WAV / APE / FLAC. Main function MP3/USB/TF/LINE IN/FM/BLUETOOTHemote controlBattery Type: 1 x CR2025Power 50W, true stereo 2 x 25W.Digital large color screen displaySize: 92 x 41MMMaterial: plasticcolour: blackPackage Contents:1 x Decoding board1 x The remote control (no battery included)4 x cableOnly 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.