Black Car/Home office Head-band Headset Wireless 5.3 30 m Supraaural 3296 dB Microphone type: Boom Built-in battery Lithium-Ion (Li-Ion) Performance On/off switch Yes Adjustable headband Yes Optimized for Microsoft Teams BeamForming Yes Cable length 1 m Control type Buttons Control unit type On-ear control unit Operating keys Answer/end call, Volume +, Volume - Product colour Black Headset type Binaural Recommended usage Car/Home office Wearing style Head-band Product type Headset Ports & interfaces Wireless range 30 m Frequency response (talk mode) 100 - 7000 Hz Frequency response (music mode) 50 - 20000 Hz Bluetooth version 5.3 Bluetooth No Connectivity technology Wireless Headphones Noise canceling Yes Driver unit 3 cm Headphone sensitivity 96 dB Impedance 32Ear coupling Supraaural Microphone Microphone mute Yes Number of microphones 2 MEMS (Micro-Electro-Mechanical System) microphone Yes Folding microphone Yes Microphone type Boom Battery Fast charging time 5 min Fast chargin