Accessory handset features DECT 6.0 digital technology to boost your wireless range without any interference from wireless networks. Full-duplex speakerphone lets you increase participation by allowing both ends to speak at the same time for conversations that are more true to life. Easy-to-read LCD displays high-contrast black text on a white background to quickly view incoming Caller ID or review your call history. The lighted keypad enhances your visibility in low-light conditions for easy dialing. Enlarge font and extra-large keys help you accurately dial numbers. Power-conserving technology manages consumption for optimal battery performance. Handset also includes quiet mode, phonebook directory, speed dial, mute and more. Energy efficient - designed to use less energy than alternative products, potentially helping you save money and reduce your carbon footprint.