Plantronics CS520. Certified Refurbished Includes One Year Warranty. . Product # 84692-01 . . The Plantronics CS520 is an over-the-head binaural (cover both ears) wireless headset. The CS520 features a new contemporary headset design, premium wideband audio quality, wireless mobility, streamlined base and improved performance all with the same dependability for wireless productivity that has made the CS series a best seller. . . The CS520 features a secure fitting headband for all day comfort weighing 92 grams, giving you up to 350 feet (100 Metres) of range to roam your office, and a battery made to last all day with 9 hours of talk time. By covering both ears with the CS520, you're able to focus on your caller and never distracted by background noise in your office. . . CS520: . . |1.9 GHz Cordless Headset |DECT 6.0 Technology . - DECT? Security certified |Gain Mobility . - Multitask & . - Hands-Free Upto 350 Feet (100 Meters) |One-Touch Call Answer / End |Volume, Mute & Flash Controls |One-Touch Controls |Energy Efficient Adaptive Power System |Conference In Upto Three Additional CS500 Or Savi Headsets |New Headsets Can Subscribed By Simply Docking The Headset |Noise Canceling Microphone Filters Out Background Noise |Voice-Dedicated DECT 6.0 Technology Eliminates Wi-Fi Interference |Enhanced Digital Signal Processing (DSP) Provides More Natural Voice Sounds |Advanced Wideband Audio |CAT-iq Technology |Use W/ Electronic Hookswitch Cable Or Handset Lifter To Remotely Answer/End Calls . . |Connects To: .