Product type: Headset Wearing style: Head-band Recommended usage: Office/Call center Headset type: Binaural Product colour: Black Operating keys: Answer/end call,Mute,Reject call,Volume +,Volume - Volume control: Button Control unit type: In-line control unit Control type: Buttons Cable length: 1.2 Cable colour: Black LED indicators: Y HD voice: Y Clear sound: Y Plug and Play: Y Certification: FCC Compatible products: T41S/T42S/T46S/T48S/T42U/T43U/T46U/T48U/T53/T53W/T54W/T57W/T58A/VP59 Connectivity technology: Wired USB connectivity: Y USB connector: USB Type-A Maximum input power: 10 Ear coupling: Supraaural Headphone frequency: 20 - 20000 Impedance: 32 Headphone sensitivity: 92.5 Driver unit: 28 Microphone type: Boom microphone Microphone frequency: 100 - 8000 Microphone sensitivity: -44 Microphone direction type: Unidirectional microphone Number of microphones: 1 Microphone noise-canceling: Y Microphone mute: Y Windows operating systems supported: Windows 10,Windows 7,Windows 8,Windows 8.1 Mac operating systems supported: Y Operating temperature (T-T): -10 - 50 Storage temperature (T-T): -30 - 70 Weight: 118 Package width: 170 Package depth: 63 Package height: 195 Package weight: 174 Quick start guide: Y Quantity: 1 Harmonized System (HS) code: 85183000 Compliance certificates: CE