Plantronics CS540 XD. Certified Refurbished Includes One Year Warranty. . Product # 88283-01 (w/o Lifter). Product # 88283-01+HL10 (w/ Lifter) . . The Plantronics CS540 XD is a convertible wireless headset. The CS540 XD features one-touch call answer/end, vol+/-, and mute, manage calls from up to 350 feet from the charging base. It enables you to conference in up to three additional XD Series headsets for easier collaboration and guest headsets can subscribe to a base by simply docking the headset. For extreme density environments, choice of narrow or wideband professional grade audio quality extends talk time or wideband mode enables clearer conversations. . . The CS540 XD has extended boom and noise-canceling microphone filter to remove background noise, so listeners can hear conversations clearly, the enhanced Digital Signal Processing provides a more natural sound, delivering clear audio the way it is intended to be heard. The adaptive power system optimizes for range and talks time by automatically downshifting to low power when the headset is close to the base to save battery life. . . CS540 XD: . . |Wireless Headset |Made To Fix Wireless Density Issues |900 MHz Wireless |350 Feet Of Range |Extraordinary Sound Quality |6 Hours Of Talk Time |Multiple Wearing Styles |Wireless Noise-Canceling Microphone . (Reduces Background Noise) |One-Touch Controls . Volume / Mute / Call Answer / End |Gain Mobility . ?Multitask Hands-Free Up To 350 Feet |Clear, Private, & Secure Conversations |Enhanced Digital Signal Processing . -Provides More Natural Sounding Voice |Discreet, Stylized Design |Lightweight and Comfortable All Day |Hot Swapable Battery |Optimized for Performance w/ Desk Phones |Recommended for All Environments, Even Those w/ Loud Noise Levels . . |Connects To: .