Yealink WHD622T Headset Wireless Head-band Office/Call center Micro-USB Black

USB connector: Micro-USB | USB connectivity: Yes | Product colour: Black | Ear coupling: Supraaural | Adjustable headband: Yes | Operating keys: Answer/end call | Number of microphones: 2 | Microphone frequency: 100 - 10000 Hz | Volume control: Button | Battery type: Built-in battery | Operating keys: Multi-key | Connectivity technology: Wireless | Microphone sensitivity: -44 dB | Wireless range: 160 m | Quick start guide: Yes | Cables included: USB | Plug and Play: Yes | Microphone type: Boom | Standby time: 125 h | DECT connectable: Yes | Product type: Headset | Battery voltage: 5 V | Control unit type: On-ear control unit | Driver unit: 2.8 cm | Wearing style: Head-band | Headphone frequency: 20 - 20000 Hz | Battery recharge time: 2.5 h | Recommended usage: Office/Call center | Weight: 127 g | Microphone mute: Yes | Impedance: 32 Ω | Headset type: Binaural | Talk time: 14 h | Headphone sensitivity: 92.5 dB | Compliance certificates: Federal Communications Commission (FCC) | Compliance certificates: CE | Frequency response (talk mode): 100 - 8000 Hz | Frequency response (music mode): 20 - 20000 Hz | Sustainability compliance: Yes | HD voice: Yes