1. Support A2DP, AVRCP and Handsfree Profile protocols
2. Bluetooth version: V5.0 + EDR class 2
3. Scope of work: up to 10 meters
4. Product packaging size: 22.4 * 9.9 * 7.5cm bare machine size: 180mm * 63mm * 63mm
6 . Speaker: 40mm 
7. Speaker output: 2 * 3
8. Frequency: 280hz-16khz
9. SNR: ≥ 95dB
10. Distortion: ≤ 0.5%
11. Battery capacity: 1800mAh
12. Charging voltage: 5V ± 0.5V
13. Charging time: 4 hours
14. Working hours: 10 hours
15. Standby time: 200 hours