AT&T Cordless Headset: * DECT 6.0 Digital technology * Up to 500" range * Handset lifter included * Lightweight and comfortable design * Works with corded and cordless 1-line and 2-line phones * Works with multi-line business systems * Expandable to 2 headsets * Sound level protection conference capability with up to 2 headsets * Multiple installation options for home or office use * Wirelessly pair to 2008 and later AT&T DECT 6.0 cordless products * Headset volume control * Mute * Over the ear, Over the head or behind the neck wearing options * Dual color lighted in-use indicator * 1-button answer * Auto off