Edifier W820NB Active Noise Cancelling Bluetooth Stereo Headphones

W820NB
Active Noise Cancelling Bluetooth Stereo Headphones
Hi-Res Audio standard
Active noise cancellation technology
Ambient sound mode
Built-in microphone
DNN (deep neural network) noise cancellation
Large driver with titanium diaphragm
Low latency for game mode
Up to 49 hours continuous playback
Lightweight headset assures comfortable fit

Bluetooth version
V5.0
Audio codecs
SBC
Driver unit
40mm dynamic driver
Playback time
ANC on: about 29 hours;
ANC off: about 49 hours
Charging time
About 1.5 hours
Battery capacity
400mAh
Frequency response
20Hz – 40kHz
Sound pressure level
91±3dB(A)
Impedance
32?
Charging port
USB Type-C