Poly / Plantronics Poly Blackwire C3215 USB

USB headset with 3.5mm Jack Noise-canceling microphone: eliminates background noise for clear conversations Mono version Sound Protection SoundGuard ™ Broadband for better audio quality Light metal headband: durability, custom fit Call control from cable: answer / hang up, volume, silence key (mute) Compatible with all Softphones, including Microsoft Teams