Two-handset cordless phone delivers long-range coverage and clarity, provided by a unique antenna design and advances in noise-filtering technology. Choose from four preset audio profiles or use the equalizer to personalize bass, treble and natural tones for your individual hearing needs. This system doubles as a multiple-handset walkie-talkie to instantly communicate with up to four units in your home. Handset speakerphone allows you to speak and listen without holding the handset. This leaves your hands free to do other things and lets more people in on the conversation. Phone is expandable up to 12 handsets with AT&T 80101 accessory handsets. Caller ID/Call Waiting function is equipped with a 50-name/number Caller ID history. High-contract backlit LCD on handset displays the name, number, time and date of incoming calls. Phone system also includes DECT 6.0 digital technology, nine-number speed dial, last 10-number redial, voicemail waiting indicator, mute and any key answer.