LONG LASTING BATTERY: The battery offers 7 hours of talk time and features an energy efficient adaptive power system in order to conserve battery life. LIGHTWEIGHT DESIGN: Features a sleek design for the most comfortable and lightest DECT headset on the market and includes one touch controls to answer or end calls. MOBILITY: Go mobile and multi-task up to 350 feet from your desk with answer, end and mute controls with talk time up to 7 hrs; adaptive power system optimizes for range and talk time SUPERIOR SOUND: Wideband audio and a noise canceling microphone ensures when you wear the CS540 wireless headset, you'll be able to hear and be heard clearly without the background distractions! PURCHASE INCLUDES: 1 x Plantronics CS540 Headset, Over-The-Head Headband, Charging Base, Base Power Supply, Fit Kit Instruction Card with Extra Ear Loops and Ear Tips, Telephone Interface Cable, and Quick Start Guide. The Plantronics CS540 Professional Wireless Headset System gives you premium audio performance and sleek, comfortable styling. The Plantronics CS540 features a top-of-the-line noise-canceling microphone for clear speech even in environments with distracting background noise. The stylized, lightweight convertible design of the Plantronics CS540 is not only discreet; it is comfortable enough to be worn all day. The CS540 has superior microphone and earpiece create a high-performance headset yielding great results for both traditional phone lines and IP telephony systems. The Plantronics CS540 offers wireless freedom with no compromises.