1. Wireless V4.2 CSR64215
2. Support protocols: Headset Hands-free A2DP Avrcp
3. ANC function, using AMS (AS3415) noise reduction chip, noise reduction
depth ≥25dB
4. Speaker: 40mm; sensitivity: 114db ± 3db
5. Battery capacity: 400mAh; size: 210*115*83mm; net weight: 270g
6. Charging voltage DC5V; charging time: 2.5 hrs
7. Call/music time: 20 hrs (ANC on: 10 hrs); standby time: 200 hrs
8. With ANC button switch, supports wired AUX input
9. Battery display <Support for Apple phones and some Android phones>