DECT cordless handset with Orbitlink wireless technology helps keep your employees productive even when they're on the move. Handset supports up to six SIP lines/accounts and two concurrent calls. Plus, enjoy hands-free conversations using the built-in speakerphone. Backlit keypad illuminates the keypad for accurate use in low light environments. With 10 selectable ringtones, you can choose your favorite melody to signal when there's an incoming call. Handset also includes a 2.5mm headset jack, keypad lock, 200-name phonebook, three-party conference, call blocking and more. Handset is designed for use with the VSP600 DECT base station (sold separately).