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

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