Communicate clearly up to 350 feet away from your desk with the CS510 Monaural Wireless Headset from Plantronics. Designed to connect to your desk phone, the CS510 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 offers up to nine hours of talk time and is designed to be worn over-the-head.