good quality ANC bluetooth headphone

Bluetooth version: V4.1+EDR
Bluetooth Chipset: CSR8635
ANC Chipset: AMS3415
Bluetooth profile: A2DP,AVRCP,HFP,HSP
Operating frequency range: 2.4-2.48GHz
Receiving distance: about 10m
Speaker: φ40mm
Frequency response: 20Hz-20kHz
Impedance: 32Ω
Sensitivity: 105±3dB (At 1000Hz)
Work voltage: 3.7V
Battery capacity: 500mAh
Working time(ANC on): up to 12 hours

Working time(ANC off): up to 24 hours
Charging time: Less than 3 hours
ANC reduction frequency: 20-800Hz
ANC reduction range: 28dB-30dB
Reduction way: feedforward and feedback