Unsurpassed range Experience the best in long-range coverage and clarity, provided by a unique antenna design and advances in noise-filtering technology. Caller ID announce Screening calls has never been easier. The handset announces the name of the caller, so you don't have to scramble for the handset to see who's calling. Push-to-talk No more shouting through the house-this system doubles as a multiple-handset walkie-talkie to instantly communicate with up to 4 units in your home. HD audio with equalizer for customized audio Choose from four preset audio profiles, or use the equalizer to personalize bass, treble and natural tones for your individual hearing needs. Simulated full-duplex handset speakerphone Enjoy a speakerphone that can keep up with your calls. Increase participation by allowing both ends to speak-and be heard-at the same time for conversations that are more true to life. Extra large display for easy viewing Easy-to-read LCD on the cordless handset. High-contrast black text on a white background provides for an easy-to-read screen to view incoming Caller ID or review call history. The lighted keypad also allows for easy dialing in low-light conditions.