Poly Blackwire 3220 Stereo USB-C Headset +USB-C/A Adapter (Bulk)

Certification: UC | Width: 155 mm | Quick start guide: Yes | Package weight: 152 g | Height: 178 mm | USB connectivity: Yes | Depth: 32 mm | Mac operating systems supported: Yes | Wearing style: Head-band | USB connector: USB Type-A | Headphone sensitivity: 90 dB | Connectivity technology: Wired | Microphone frequency: 100 - 10000 Hz | Noise reduction: Yes | Volume control: Button | Operating keys: Reject call | Microphone sensitivity: -38 dB | Product colour: Black | Operating keys: Answer/end call | Package depth: 254 mm | Driver unit: 2.8 cm | Headset type: Binaural | Package height: 10 mm | Control type: Buttons | Headphone frequency: 20 - 20000 Hz | Operating keys: Volume + | Operating keys: Volume - | Cable colour: Red | Impedance: 32 Ω | Product type: Headset | Operating keys: Mute | Recommended usage: Office/Call center | Signal-to-Noise Ratio (SNR): 118 dB | Audio adapters included: USB | Control unit type: In-line control unit | Windows operating systems supported: Windows 10 | Microphone type: Boom | Microphone direction type: Omnidirectional | Hearing protection technologies: SoundGuard DIGITAL | Ear pad material: Polyurethane (PU)