S3 Nature sound ANC noise reduction wireless headphones 400mAh for 200h standby and 20h of music / calls 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. Weight: 270g. 6. Charging voltage DC5V, charging time: 2.5hrs. 7. Call / music time: 20hrs (ANC on: 10hrs). Standby time: 200hrs. 8. With ANC button switch, supports wired AUX input. 9. Battery display supported for Apple phones and some Android phone
S3 Nature sound ANC noise reduction wireless headphones 400mAh for 200h standby and 20h of music / calls 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. Weight: 270g. 6. Charging voltage DC5V, charging time: 2.5hrs. 7. Call / music time: 20hrs (ANC on: 10hrs). Standby time: 200hrs. 8. With ANC button switch, supports wired AUX input. 9. Battery display supported for Apple phones and some Android phone