DECT 6.0 Plus accessory handset is designed for use with Panasonic KX-TG6600 Series Cordless Phones. DECT 6.0 Plus Technology for superb sound quality and outstanding range. Engineered to work in 1.9GHz frequency, the DECT 6.0 phone won''t conflict with common wireless devices and delivers long-range and clear sound while deterring eavesdropping. White backlit 1.8" LCD offers full DOT Mono 103 x 65 pixels. Handset also features one line, up to three-way conference calling, Caller ID with 50-item memory, Ringer ID, 60 channels, a handset locator, backlit keypad, hold key, intercom, mute key, four-step call volume, six-step speakerphone volume, six-step ringer volume, 10 ringer patterns, headset jack, belt clip, five-history redial memory, clock/alarm and silent mode. Language display can be in English or Spanish. Battery life in talk time is 13 hours. Battery life in standby mode is 11 days. Phone takes seven hours to charge.