Battery
Talk time	10 h
Battery recharge time	3 h
Standby time	90 h
Certificates
Compliance certificates	CE, Federal Communications Commission (FCC)
Headphones
Ear coupling	Supraaural
Headphone frequency	20 - 20000 Hz
Impedance	32 Ω
Headphone sensitivity	92.5 dB
Driver unit	2.8 cm
Logistics data
Master (outer) case width	325 mm
Master (outer) case length	345 mm
Master (outer) case height	400 mm
Master (outer) case gross weight	3.6 kg
Products per master (outer) case	20 pc(s)
Microphone
Microphone type	Boom
Microphone frequency	100 - 8000 Hz
Microphone sensitivity	-44 dB
MEMS (Micro-Electro-Mechanical System) microphone
Microphone mute
Other features
Cable weight	18.5 g
Packaging content
Cables included	USB
Quick start guide
Packaging data
Package width	195 mm
Package depth	170 mm
Package height	63 mm
Performance
Product type	Headset
Wearing style	Head-band
Recommended usage	Office/Call center
Headset type	Monaural
Product colour	Black
Operating keys	Answer/end call, Mute, Reject call, Volume +, Volume -
LED indicators
Ports & interfaces
Connectivity technology	Wireless
Frequency response (talk mode)	100 - 8000 Hz
Wireless range (line of sight)	300 m
Wireless range (typical building)	50 m
Sustainability
Sustainability compliance
Weight & dimensions
Weight	80 g

WH62/WH66 Mono UC only headset without base Unified Communications Standard DECT Wireless Headset DECT Headset: - Monaural Ear (single ear) Headset - Busylight on headset - Leather Ear Cushions - Yealink Acoustic Shield Technology