Poly Blackwire C5220, USB-A & 3.5mm (207576-01 aka 80R97AA) Headset Accessories Active Noise Canceling (ANC) technology

Active Noise Canceling (ANC) technology reverses surrounding sound waves to cancel low frequency noise in order to isolate and minimize ambient noise

Ergonomically designed

it can connect to your desk phone

These lightweight headsets feature narrow-band receiver audio and are optimized for use in mission-critical applications such as air traffic control and emergency dispatch

Charge cables sold separately

Poly Blackwire C5220, USB-A & 3.5mm (207576-01 aka 80R97AA) Headset Accessories Active Noise Canceling (ANC) technologyStereo USB, Mini phone Wired Over the ear Binaural Supra aural Connects to PC and Mac via USB USB C, smartphone and tablet via 3. 5 mm Intuitive inline controls to answer end calls, control volume, and mute Dynamic EQ feature automatically adjusts audio for voice and multimedia use Ideal for all day use, long conference calls and listening to multimedia Ultra soft leatherette ear cushions wrapped around pillow soft memory foam provide all day comfort