With the Panasonic's KX-TG5777SK 3-in-1 bundle system you get 1 base unit, 1 charger and 3 handsets. With Panasonic's KX-TG5777SK expandable phone system, you only need one phone jack to operate the additional handsets. Plus, this 3-handset system uses Frequency-Hopping Spread Spectrum technology to ensure great sound, incredible clarity, long range and excellent security from eavesdropping. Plus, 5.8 GHz technology will not interfere with wireless networks such as 802.11b or 802.11g WiFi. So, with the Panasonic KX-TG5777SK, expand your phone system and forget about all your wiring worries. Features: -Expandable up to 8 Handsets With Just One Phone Jack -5.8 GHz Frequency-Hopping Spread Spectrum -1.5" Full-Color Backlit LCD on handset -Built-in Digital Answering Machine -Built-in USB port on handset downloads pictures, ringers, wallpaper or phonebook -Phone Directory (50 entry memory) -Phone Directory Sharing (USB) -Intercom (Handset-to-Handset and Handset-to-Base) -Voice Scramble (Digital Security) -Headset Jack -Handset Speakerphone -Wireless Network Friendly -CallerID (50 entry memory) -PictureID -RingerID -Talking CallerID -Call Waiting CallerID -Custom Ring Tones -Voice Enhancer -Voice Mail Message Waiting Indicator (FSK & Stutter compatible) -Light-up Antenna w. Ringer/Message Alert on handset -89 Channels This item is factory renewed and comes with a 90-day warranty