1. Bluetooth version: V5.3 / JL7008
2. Bluetooth protocol: a2dp\avctp\avdtp\avrcp\hfp\spp\smp\att\gap\gatt\rfcomm\sdp\l2cap profile
3. Channel system: dual channel
4. Battery capacity: 300mAH
5. Speaker size: 40MM
6. Bluetooth mode playback time: 24h
7. Noise reduction mode playback time: 17h
8. Talk time: 24h
9. Charging time: 2.5h
10. Speaker sensitivity: 110db+-3db
11. ANC noise reduction: 22db+-3
12. Optimal talk distance: <1M
13. Maximum transmission distance: 10M