Edifier W820NB Over-Head Wireless Headphone
- 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

Specifications
- Bluetooth version: V5.0
- Audio codecs: AAC, 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: 32Ω
- Charging port: USB Type-C