1. Bluetooth solution: 5.0 EDR, A2DP, HSP, AVRCP

2. Frequency: 2.4GHz to 2.48GHz

3. Bluetooth transmission distance ≤ 10 meters

4. Bluetooth reception distance ≤ 10 meters

5. Charging voltage: DC 5V

6. Battery capacity of 300 milliamps

7. Working hours: about 6 hours

8. Bluetooth reception function: connect to 1 mobile phone

9. Bluetooth emission function: Connect 1 pair of Bluetooth earphones

10. Screen display: can display 8 device names to be paired (transmitter)/can display paired phone names (receiver)