Product Description Convertible DECT headset delivers hands-free productivity, simple plug-and-talk installation, energy-efficient power management, and one-touch controls. Lightweight, wireless headset provides mobility, allowing you to multi-task hands-free up to 350' and magnetic docking. Wear over the ear or over the head. Adaptive power system optimizes for range and talk time so you get up to seven hours of talk time. Premium, wideband audio quality delivers audio performance up to 6,800 Hz. DECT technology provides better audio, eliminating interference from Wi-Fi networks. Noise-canceling microphone reduces background noise interruptions, ensuring great audio quality and easing listener fatigue. Enhanced Digital Signal Processing (DSP) provides more natural-sounding voice. One-touch controls include call answer/end, volume up/down and mute. CS540 headset includes the Plantronics HL10 Handset Lifter that adds more call answer/end convenience. From the Manufacturer Communicate clearly up to 350 feet away from your desk with the CS540 Wireless Headset from Plantronics. Designed to connect to your desk phone, the CS540 sports a sleek, lightweight design and has been comfort-tested. One-touch controls on the headset allow you to answer or end calls and adjust or mute the volume. The system also enables you to conference in up to three additional headsets for easier collaboration. The headset comes with ear loops as well as a headband, allowing you to find the most comfortable wearing style--over the ear or over the head. CS540 Wireless Headset SystemAt a Glance: Manage desk phone calls up to 350 feetWideband audio and noise-canceling microphone provide clearer conversationsThree different wearing styles: over the ear, over the head, or behind the headOne-touch call answer/end, mute, and volume adjust for simple call managementUp to seven hours of battery life on one charge; adaptive power system helps conserve battery life The charging base connects to your desk phone. View larger. DECT technology is designed to provide long range and maximum call clarity. Wireless Multitasking Made EasyOne-touch controls on the CS540 Wireless Headset allow you to answer or end calls and adjust or mute the volume. The system also enables you to conference in up to three additional headsets for easier collaboration. The headset comes equipped with DECT 6.0 technology that allows you to talk hands free up to 350 feet away from the base.Engineered for Outstanding Sound QualityIn addition to DECT technology, the CS540 offers wideband audio for clearer phone conversations. The headset's noise-canceling microphone filters out background noise and enhanced Digital Signal Processing (DSP) makes voices sound more clear and natural.Multiple Wearing Styles to Suit Your NeedsThe CS540 sports a sleek, lightweight design and has been tested for comfort. It can be worn over the ear for a discreet look or over the head for greater stability. A neckband (sold separately) also allows you to wear the CS540 behind the head.Charging Base with Adaptive Power SystemA sleek magnetic charging base is included with the CS540. An adaptive power system optimizes for range and talk time by automatically downshifting to low power when the headset is close to the base to save battery life.Plantronics also offers the HL10 Handset Lifter which can be attached to your desk/office phone to complete your cordless headset system. The HL10 lifts up and replaces the handset so you don't have to be at your desk to answer the phone or to hang up.Product and Warranty InformationThe headset weighs 21 grams and offers up to seven hours of talk time on one battery charge.The CS540 Wireless Headset is backed by a one-year limited warranty.What's in the BoxHeadset, over-the-head headband, charging base, base power supply, fit kit instruction card with extra ear loops and ear tips, telephone interface cable, HL10 handset lifter, and quick start guide.