Panasonic KX-TGA670B 5.8GHz Digital Cordless Phone Handset KXTGA670B Panasonic KX-TGA670B is the 5.8GHz Gigarange accessory additional handset color matched for use with the Panasonic KX-TG6700B expandable cordless phone system. 5.8 GHz Frequency-Hopping Spread Spectrum (FHSS) Technology. Light-Up Indicator with Ringer/Message Alert. 50-Station Phonebook & Dialer. 50-Station Caller ID Memory & Dialer. Voice Enhancer Technology. Handset Speakerphone. 3-Line Backlit LCD on Handset. Lighted Handset Keypad. Intercom. Handset Locator. Chain Dial. Phonebook Sharing. Clarity Booster. Replacement Battery: Panasonic HHR-P104.