Plantronics Blackwire 7225 is a plug-and-play stereo headset with active noise cancellation and a boomless design. Blackwire 7225 has four microphones in the earcups that separate your voice from background distractions, providing incredible hi-fi stereo sound. Lightweight and comfortable, Blackwire 7225 connects simply by plugging it into a computer. Plantronics Blackwire 7225 has call controls directly on the earcups, so you can answer or end calls, mute, or change volume right on the headset. Plantronics headsets are intelligent with features like a mute status indicator to let you know when you're talking with mute on. They make it simple to manage your headset, letting you enable advanced features with the free Plantronics Hub app. SpecificationsColor: BlackConnectivity Technology: WiredSound Mode: StereoImpedance: 32 OhmMinimum Frequency Response: 20 HzMaximum Frequency Response: 20 kHzNoise Canceling: YesSound Pressure Level: 127 dBHost Interface: USB Type AEarpiece Design: Over-the-headEarpiece Type: BinauralDriver Size: 1.26''Microphone Technology: Noise Cancelling,Omni-directionalForm Factor: Supra-auralCountry of Origin: MexicoWeight: 0.65 lbs