DECT 6.0 two-line expandable phone system is a full-featured system that is expandable to six cordless handsets. Operating in the 1.9GHz frequency range, phone will not conflict with other wireless devices such as computer routers, wireless keyboards, microwave ovens and other common household devices. Phone system offers Caller ID, two phone lines, a 1.9GHz frequency, backlit keypad, three-line LCD, three-step talk volume, six-step speakerphone volume, headset jack, 10-number redial memory, intercom, three-way conference calls, and 100-name/number memory. Night mode allows you to program the handset to ring or remain silent for specified time period without affecting other handsets. Battery life lasts 12 hours of talking and six days in standby mode. Phone works during a power outage. System includes a corded base unit and two handsets.