The Panasonic KX-TG5576M 5.8GHz FHSS GigaRange Digital Cordless Answering System has more built-in functionality than some mobile phones. With its 5.8GHz Frequency-Hopping Spread Spectrum(FHSS) technology you"ll always have a strong, clear signal while the gorgeous 65,000 color 1.6" LCD display shows you who you"re talking to, or any other information you"d like. The Caller IQ compatibility provides access to everything from new rings to lottery results. The handset is expandable, allowing up to 8 on a single phone connection. The All-Digital Answering System helps you get every message, every time. With this Panasonic phone the world is at your disposal, from any room in the house. Light-up indicator with ringer/message alert Selecable Ringtones - 3 tones, 4 melodies Ringer Melody Download on Base & Handset 50-station Caller ID memory and dialer 50-station phone book & dialer Chain dial Intercom Lighted handset keypad Up to 4-way conferencing 10-station speed dialer Phone book sharing Redial for last 5 numbers on base & handset Caller IQ compatible Expandable for up to 8 handsets Wireless network friendly Customized ringer USB Port for downloading pictures, ringers wallpaper Dual keypads and speakerphones on base & handset Ringer, talk & volume control on handset Hold/Mute/Flash buttons Headset jack and belt clip included Wall mountable Reversible handset charging Replacement battery - HHR-P104