The AT&T EL1121-31 (Black & Silver) DECT 6.0 Cordless Phone with 3-Handsets, Caller ID/Call Waiting and full-duplex handset speakerphone is designed to keep your home connected and your conversations effortless. The 1.8" backlit keypad and LCD display illuminates up to provide clear visibility and easier readability in low light conditions. Whether you're putting the baby to sleep, enjoying a family dinner, or simply relaxing, Quiet Mode lets you silence the ringer on both the handset and base. Take calls on your own terms without interruptions. ECO Mode automatically reduces power consumption, helping your phone use less energy while extending battery life. Powered by the latest available frequency band, DECT 6.0 technology ensures superior voice quality with minimal interference. It also offers stronger protection against eavesdropping than traditional 2.4GHz and 5.8GHz phone systems.