POLYCOM 2200-44140-001 Wired Voice Conferencing Device Additional Features: Polycom HD Voice technology for high-fidelity sound Two high-quality microphones Polycom HD Voice technology also delivers industry-leading echo cancellation and full duplex technology Integrated button controls for a seamless user experience Connects and powers through an integrated USB cable Hands-free functionality High-quality audio – Hardware supports up to 22kHz for CD-quality music or presentation audio Convenient buttons – Launch applications, pick up and hang up calls, and control volume and mute Built-in stereo headphone port for private conversations The integrated USB cable stores inside the unit for portability and convenience Parts: 1 year limited Labor: 1 year limited