Features: 1. Bluetooth-Compatible version 5.0 2. Support call (long press the pause button to answer the call when it comes). 3. Support recording. Recording only supports TF mode or USB mode operation. (Long press MODE button to start recording, long press MODE button again to cancel recording and play the recording file; recording requires a storage device to be connected, such as: U disk or TF card;) 4. Support power-off memory 5. Color screen display 6. Power supply voltage support between DC6v-18v, current between 1-3A. 7. Can be directly connected to the speaker, with amplifier and decoding function. 8. Support song format MP3 / WAV / APE / FLAC 9. Main functions MP3 / USB / TF / LINE IN / FM / Bluetooth-Compatible / remote control / 10. Power 50W, dual-channel (2 * 25W can be directly connected to the speaker) Specifications: Size: 108*3.2*25MM Weight: 40G includes: 1 x MP3 Decoder