Features: 1. Adopt advanced Bluetooth audio decoding chip to support the connection of all Bluetooth devices; 2. Support FM radio, you can directly search for radio stations in the listening area; 3. The tone is soft, clear and dynamic, with distinct levs; 4. Direct reading of TF card and U disk; 5. The Bluetooth receiving distance can be as long as 10 meters; 6. Support LINE IN audio input, provide you with computer speaker function, which can be directly connected to mobile phone / tablet / and TV to wiressly pair and play music; 7. There is no connection in Bluetooth mode, it will automatically shut down in half an hour; 8. Support TWS function; 9. A variety of flashing modes Symphony LED lights, the lights can flash with the music mody, one-key conversion, the music mody can not only be listened to but also seen.Parameters: 1. Bluetooth specification: V5. 12. Wiress transmission range: 10m 3. Audio-to-noise ratio: above 90db 4. Battery capacity: 1800mAh 5. Built-in voltage: 3.7V 6. Normal volume playback: 4H 7. Speaker specifications: 45mm* 28. Power: 4ohm/5W* 29. Frequency response: 120Hz-20KHz 10. Product size: 70.5x70x165.5mm 11. Single machine weight: 384g 12. Charging voltage: 5V/500ma 13. Charging time: 3HPacking list:- Bluetooth speaker x1- Charging cable x1- Audio cable x1- Chinese and English instruction x1