Poly Blackwire 3220 headset, USB-C/A adapter, stereo (bulk)

Black stereo headset Poly Blackwire 3220 USB-C + USB-C/A adapter (set) Specifications Impedance: 32 ohms Button controls: Answer/end call; Ignore/hold call; Redial; Mute; Volume +/- Microphone frequency response: 100 Hz to 10 kHz Speaker size: 28 mm Speaker frequency response: 200 Hz to 6.8 kHz (voice mode); 20 Hz to 20 kHz (media mode) Headphone type: On-ear (stereo) Connection type: Wired: USB Type-C, USB Type-C/A adapter Cable length: 64 cm (from integrated module to headset); 144 cm (from USB to integrated module); 208 cm (from all USB to headset) Acoustic protection technology: SoundGuard Colour: Black Display function: Compatible with computers via USB Type-C cable or USB Type-C/A adapter Compatible operating systems: Windows 11; Windows 10; macOS; Android™; iOS Dimensions (width × depth × height): 155 x 32 x 178 mm Weight: 119 g (with cable); 92 g (without cable) Package weight: 300 g Warranty: Standard two-year limited Poly warranty Package contents: User guide; Headset; USB Type-C to USB Type-A adapter Country of origin: Made in China or Mexico Footnote number for acoustic protection technology: [1] Acoustic protection technology: SoundGuard Microphone frequency response: 100 Hz to 10 kHz Button controls: Answer/end call; Ignore/hold call; Redial; Mute; Volume +/- Cable length: 64 cm (from integrated module to headset); 144 cm (from USB to integrated module); 208 cm (from all USB to headset) Certified collaboration software: Works With Chromebook certification Connection type: Wired: USB Type-C, USB Type-C/A adapter Ear cushions: Foam (surface material) Headphone type: On-ear (stereo) Impedance: 32 ohms 130 mm Management software: Poly Lens Microphone type: Noise reduction Compatible operating systems: Windows 11; Windows 10; macOS; Android™; iOS Microphone boom rotation: 270° Sensitivity (microphone): 10 dB SLR Sensitivity (speaker): 6 dB RLR Signal-to-noise ratio: >24 dB Speaker frequency response: 200 Hz to 6.8 kHz (voice mode); 20 Hz to 20 kHz (media mode) Speaker size: 28 mm Package contents: User guide; Headset; USB Type-C to USB Type-A adapter Warranty: Standard two-year limited Poly warranty Footnotes Legal restrictions Device type: Headsets