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

Compatibility
Compatible with PCs via USB Type-C® cable or USB TypeC®/A adapter
Compatible operating systems: Windows 11; Windows 10;
macOS; Android™; iOS
Performance
Product colour: Black
Connectivity and communications
Connection type: Wired: USB Type-C®, USB Type-C®/A
adapter
Ear cushions: Foam (surface material)
Headphone type: On-ear(stereo)
Userinterface features
Button user controls: Call answer/end; Call ignore/on hold;
Redial; Mute; Volume +/-
Audio
Acoustic protection technology: SoundGuard
Microphone type: Noise cancelling
Microphone bandwidth: 100 Hz to 10 kHz
Speaker bandwidth: 200 Hz to 6.8 kHZ (speech mode); 20
Hz to 20 kHZ (media mode)
Speaker size: 28 mm
Signal-to-noise ratio: >24 dB
Frequency response (microphone): 100 Hz to 10 kHz
Sensitivity (microphone): 10 dB SLR
Sensitivity (speaker): 6 dB RLR
Power supply
Impedance: 32 ohm
Certifications
Certified collaboration software: Works With Chromebook
certified
Ecolabels: TCO Certified