EDIFIER W828NB Folable Hybrid Active Noise-reduction Wireless bluetooth 5.0 Stereo Headphone With Mic

FEATURES: Active Noise Cancelling (ANC) headphones for optimum performance Qualcomm bluetooth V5.0 ensures low power with high transfer and stable connection 25 hours playback with bluetooth and ANC functions switched on Ergonomic over-ear design with comfortable and soft earcups Metallic paint and metal scraps for beautiful appearance and exquisite skill Collapsible headphones comes with a secure travel pouch Supports AUX wired input which maintains ANC functionality SPECIFICATIONS: bluetooth version: bluetooth V5.0 bluetooth protocol: A2DP, AVRCP, HFP, HSP Effective distance: 10m Working hours: 25h (bluetooth + noise reduction) Charging time: 4h Impedance: 24 Frequency response range: 20Hz-20kHz Sensitivity (SPL): 100dB