UC ProSet 10P DC. Monaural single-wire headset featuring Plantronics-compatible quick disconnect for headset-ready phones. Wideband audio and superior noise canceling make it ideal for Unified Communications (UC) environments. For headset-ready phones (no amplifier needed). Monaural (one speaker) headset lets you hear whats going on around you. Wideband audio for clearer conversations and greater productivity. Superior noise canceling improves communication. UC-ready when you are. Lightweight attractive design is easy to wear all day. High-quality durability stands up to every-day use. Compatible with Plantronics and P-series amplifiers and direct connect cords. Dimensions: 8H x 6L x 2W.