1.Wireless Version: 5.3
2.Support Profiles: A2DP，AVCTP，AVDTP，AVRCP，HFP，SPP，SMP，ATT，GAP，GATT，RFCOMM，SDP，L2CAP
3.Operation Distance: 10m
4.Frequency Range: 2.402 -2.480 GHz
5.Speaker: Ø40mm
6.Impedance: 32Ω
7.Frequency Response: 20Hz-20KHz
8.ANC Amplitude: 25+/-3dB
9.ANC Frequency Range: 20-1000Hz
10. Rechargeable Lithium Battery: 400mAh
11. ANC on Music Playing Time: 8h
12. ANC off Music Playing Time: 26h
13. ANC on Talking Time: 7h
14. ANC off Talking Time: 24h
15. Charging Time: 2.5h