Poly Blackwire 3320 USB-A Wired Binaural Headset Works without any issues, but the synthetic leather on the inside of the headband is peeling due to aging. Noise-canceling microphone, domestic genuine product 213934-01-A Black M The Blackwire 3300 series is a professional-grade headset for business use. It connects to a PC via a simple USB-A connection and provides excellent audio quality for its class. Stylish Design It combines a sophisticated design with excellent audio quality for use in business settings. Comfortable to wear all day long, with clear call quality, benefiting the entire team. Noise-canceling microphone The noise-canceling microphone attached to the flexible boom delivers clear voice quality. Soft ear cushions The 180-degree rotating earcups and soft ear cushions provide all-day comfort. Inline controls It connects to a PC via a simple USB-A connection. Inline controls allow for easy operation, such as microphone muting. * Simple and easy to connect to PC and Mac. * Recommended for: Users transitioning to PC for telephony, webinars, and conference calls. * Audio performance: Wideband audio, a noise-canceling microphone, and enhanced digital signal processing (DSP) provide clear, natural, and rich audio. SoundGuard: Acoustic limiting function that protects the ears from sounds exceeding 118dBA.