Cordless answering system with four handsets provides long-range coverage and clarity with its unique antenna design and noise-filtering technology. Caller ID Announce audibly reveals the name of your caller so you don't have to scramble for the handset to see your caller. Push-to-talk acts like a walkie-talkie to instantly communicate with up to four units throughout your office. Choose from four preset audio profiles or use the equalizer to personalize bass, treble and natural tones for your individual hearing needs. Full-duplex, handset speakerphone allows both ends to speak and be heard at the same time for conversations that are true to life. Extra-large LCD displays black text on a white background for easier viewing. Plus, the lighted keypad allows easy dialing in low-light conditions. DECT 6.0 digital technology delivers excellent sound quality and range while ensuring wireless networks and other electronic devices don't interfere with conversations.