Lenovo EPOS ADAPT 561 II Headset Wired & Wireless Head-band Office/Call center USB Type-C Bluetooth Black

USB Type-C charging port: Yes
Operating relative humidity (H-H): 10 - 85%
Operating temperature (T-T): -20 - 70 °C
Weight: 245 g
Mobile operating systems supported: iOS
Windows operating systems supported: Yes
Certification: CB, BQB, CE, UKCA, RCM, FCC, ICES, BIS, SIRIM, SDoC, RAMATEL, ANATEL, BSMI
Product colour: Black
Foldable: Yes
Recommended usage: Office/Call center
Product type: Headset
Wearing style: Head-band
Sound pressure level (max): 108 dB
Headset type: Binaural
Optimized for: UC
Package type: Box
Package height: 207 mm
Package weight: 524.5 g
Package depth: 65 mm
Package width: 183 mm
Receiver included: Yes
Wireless receiver interface: USB Type-C
Cables included: USB Type-C to USB Type-C
Safety sheet: Yes
Charging case: No
Charging stand: No
Bluetooth profiles: SBC, AAC
Wireless range: 30 m
Bluetooth version: 5.0
USB connectivity: Yes
USB connector: USB Type-C
Connectivity technology: Wired & Wireless
Bluetooth: Yes
Standby time: 1944 h
Charging source: USB
Battery operated: Yes
Battery recharge time: 3.5 h
Continuous audio playback time (ANC on): 24 h
Talk time (ANC off): 41 h
Continuous audio playback time (ANC off): 46 h
Talk time (ANC on): 24 h
Other operating systems supported: ChromeOS
Distortion: 0.3%
Folding microphone: Yes
Microphone frequency: 100 - 10000 Hz
Number of microphones: 2
Microphone direction type: Omnidirectional
Microphone type: Boom
Microphone input impedance: 32 Ω
Hybrid noise-canceling: Yes
Microphone noise-canceling: Yes
MEMS (Micro-Electro-Mechanical System) microphone: Yes
Headphone frequency: 20 - 20000 Hz
Driver unit: 4 cm
Ear coupling: Supraaural
Headphone sensitivity: -24 dB
Driver type: Dynamic
Total Harmonic Distortion (THD): 0.3%
Acoustic system: Closed
Maximum input power: 50 mW
Impedance: 32 Ω
Charging time: 210 min