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

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