||Headset Battery: Li Ion PolymerBattery Recharge Time: 1.5 hours (80%) / 3 hours (100%)Talk Time: 8 hoursUser Density: 40Digital Security: YesCompatibility: Most office or PBX-based telephonesWireless Hands-free Mobility: Plantronics CS50 is the next-generation wireless headset system that lets you take the conversation wherever you need to go. Up to 300 feet.All-day Freedom and Convenience: Walk and talk for up to 8 hours on the phone without having to recharge your CS50.Crystal Clear and Secure Conversations: The CS50 uses digital 900 MHz technology to deliver calls that are clear, private and completely secure.Intuitive, Intelligent, Innovative: The CS50's integrated IntelliStand makes wireless mobility as easy as answering the phone-pick up the headset and you pick up the call.* And when you're away from your desk, you're still in touch to think and talk on your feet, either answering or ending a call with the touch of a button.Stylish, Convertible, Comfortable: The CS50 is as stylish as it is comfortable with a customizable, convertible headset that can be worn over the ear or over the head, ensuring all-day wearing comfort. An optional behind-thehead style is also available.*Requires HL10 handset lifter sold separately.