1. Bluetooth version: version 4.2. 2. Wireless distance: The distance is more than 10M. 3. Frequency range: 2.4 GHz. 4. Talk time: 5-7 hours. 5. Standby time: 350-500 hours. 6. Sensitivity: -75dBm. 7. Rechargeable battery: 130 MAh. 8. Charging voltage: 5V 0.7A. 9. Accessories: main body, USB data cable, manual. 10. How to use: Turn on the code, press and hold the middle button for 2 seconds, one click, the red and blue lights will light up in sequence, then the red and blue lights will flash alternately to enter the code mode; the code is successful, the blue light is always on, and the phone is turned on. Bluetooth can search for this Bluetooth name.