Product type: Headset Wearing style: Head-band Recommended usage: Office/Call center Headset type: Binaural Product colour: Black Operating keys: Answer/end call,Multi-key,Mute,Reject call,Volume +,Volume - Volume control: Button Control unit type: On-ear control unit Control type: Buttons LED indicators: Y DECT connectable: Y HD voice: Y Adjustable headband: Y Plug and Play: Y Connectivity technology: Wireless USB connectivity: Y USB connector: Micro-USB Frequency response (music mode): 20 - 20000 Frequency response (talk mode): 100 - 8000 Wireless range: 160 Maximum input power: 30 Ear coupling: Supraaural Headphone frequency: 20 - 20000 Impedance: 32 Headphone sensitivity: 92.5 Driver unit: 28 Noise reduction: Y Microphone type: Boom microphone Microphone frequency: 100 - 10000 Microphone sensitivity: -44 Number of microphones: 2 Microphone mute: Y Base station colour: Black Battery operated: Y Battery type: Built-in battery Talk time: 14 Battery recharge time: 2.5 Standby time: 125 Storage temperature (T-T): -5 - 45 Weight: 127 Package width: 260 Package depth: 203 Package height: 112 Package weight: 710 Package type: Box Charging stand: Y Quick start guide: Y Cables included: USB Base station: Y Harmonized System (HS) code: 85183000 Compliance certificates: CE,Federal Communications Commission (FCC)