Dimensions Headset Weight: 183.0 mm Width: 169.7 mm Depth: 73 mm Weight: 185 g Ear pad Weight: 98.6 mm Width: 75.4 mm Depth: 19.3 mm Technical Specifications Microphone Type: Dual omni-directional MEMS mics with directional beamforming and DSP Frequency Response: 100 ~ 8 KHz Speakers Frequency response (music mode): 20 ~ 20 KHz Frequency response (talk mode): 100 ~ 8 KHz Sensitivity: 118.0±3 dB at 1mW @1 kHz Driver size: 40 mm Battery Built-in battery (Lithium ion) Battery life (talk time): Up to 18 hrs Battery life (listening time): Up to 20 hrs  Charging USB-C charging cable: 1.5 m Wireless Bluetooth version: 5.2 Wireless range: Up to 30 m (open field line of sight)