TL7600 DECT 6.0 Wireless HeadsetVersatile headset delivers precise volume control. For use with AT&T SynJ™ Phone System and AT&T Cordless DECT 6.0 Expandable Phones. Multiple wearing styles include behind the ear and over the head. Up to 500 ft of cordless range for larger workspaces. Up to nine hours of talk time. Convenient one-button answer for incoming calls. Auto off maintains battery life. Headset Type: Monaural; Headset Style: Convertible; Earpiece Type: Ear Cushion.