Edifier W820NB Plus Gray / Bluetooth and Wired Over-ear headphones with microphone, ANC, LDAC, Game mode, Ambient Sound Awareness, BT V5.2, Dynamic driver 40 mm, Frequency response 20 Hz-20 kHz, On-ear controls, Ergonomic Fit, Battery Lifetime (up to) 49 hr, charging time 1.5 hr