Microsoft Life Chat LX-3000. This comfortable headset features a Windows Live Call Button that makes calling fast and easy, wireless 2.4-GHz technology up to 30 feet, and an advanced battery that lets you talk up to eight hours between charges. Digital Speaker; Advanced speaker deliver crystal-clear audio.;Noise-cancelling Microphone The noise-cancelling microphone automatically picks up your voice with remarkable clarity. Padded Ear Cup and Adjustable Earband Comfortable earpiece and two adjustable earbands for a custom fit. Optimized for Windows Live Messenger Seamlessly integrated with Windows Live Messenger for easy setup and use. Wireless Headset Convenience Four LEDs indicate out-of-range, battery life, charging, and connection status. Wireless Technology Wireless 2.4-GHz technology with up to 30-foot range. Rechargeable with Eight Hours of Talk Time The advanced battery delivers up to eight hours of talk time on a single recharge.