Panasonic''s KX-TG4742B DECT 6.0 Plus Expandable Digital Cordless Answering System is designed with innovative, user-friendly features that make keeping in touch easier than ever. A large LED light atop the handset lets you know when someone calls and is perfect for when you can''t hear the ringer. An easy-to-read, extra-wide LCD display lets you see who is calling at a glance. The bigger buttons make dialing a breeze while an amplified handset volume ensures you catch every word, even when there is background noise. Plus a Tone Equalizer control actually lets you adjust bass, mid-range or treble tones in a caller''s voice for maximum clarity. In addition, the Intelligent Eco Mode feature automatically lowers the power consumption when you are using the handset close to the base unit. Not only does it extend the available talk time, it''s good for the environment. This system features a big button keypad on the base for added convenience and is expandable up to six handsets.