Acoustic Shield Technology Optima Audio Experience Multi-device Connection All-day Comfort Customizable Busylight Plug & Play With easily on-ear control, interruption-free, and comfortable wearing, Yealink WH62 is a nice partner either for communicating or collaborating. Performance Plug and Play Yes HD voice Yes Adjustable headband Yes DECT connectable Yes LED indicators Yes Control type Buttons Control unit type On-ear control unit Volume control Button Operating keys Answer/end call, Multi-key, Mute, Reject call, Volume +, Volume - Product colour Black Headset type Monaural Recommended usage Office/Call center Wearing style Head-band Product type Headset Ports & interfaces Wireless range 160 m Frequency response (talk mode) 100 - 8000 Hz Frequency response (music mode) 20 - 20000 Hz USB connector Micro-USB USB connectivity Yes Connectivity technology Wireless Headphones Noise reduction Yes Driver unit 2.8 cm Headphone sensitivity 92.5 dB Impedance 32Headphone frequency 20 - 20000