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

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