Poly Blackwire 3220 USB Headset:

• USB-C (C to A Adapter) connection for plug-n-play simplicity
• An affordable entry level USB headset for VoIP/softphones
• 28mm soft foam cushions to seal out background noise
• Adjustable headband for all-day comfort
• Wideband audio w/ noise canceling for high-quality PC calls 
• Controls to answer/end calls, control volume, and mute