Edifier W820NB Classic Edition, Over-Ear, Bluetooth Active Noise Cancelling Headphones, White

**Product Specifications:**

Brand: EDIFIER Model: W820NB Type: Over-ear Bluetooth Headphones with Active Noise Cancellation Features: Hi-Res Audio, Lightweight Design, AI Call Noise Reduction Noise Cancellation Depth: Up to -42dB Environment Sound Monitoring Titanium Composite Diaphragm Battery Life: Up to 50 hours Low Latency Gaming Mode Ergonomic Lightweight Design Deep Neural Network Call Noise Reduction Technology Bluetooth Version: Bluetooth V5.2 Bluetooth Protocols: A2DP, AVRCP, HFP Effective Range: 10m Working Time: Up to 30 hours with noise cancellation on, up to 50 hours with noise cancellation off Charging Time: Approximately 1.5 hours Rated Input: DC 5.0V 1A Frequency Response: 20Hz-40KHz Output Sound Pressure Level: 91+/-3dBspl (A) Nominal Impedance: 32Ω

*Note: The specifications mentioned above are subject to variations based on usage conditions and testing environments. For accurate information, please refer to the actual product.*