DECT 6.0 (Digital Enhanced Cordless Communications) technology lets you move freely around your home with long range, amazingly clear sound, and greater protection against eavesdropping. Expandable handset option supports up to six phones without all the messy wiring or complicated setup. All-digital answering system for quick, easy retrieval of crystal-clear messages. Handset speakerphone allows you to put the phone down while you talk for maximum convenience. Call waiting caller ID lets you see who``s calling, even if you``re already on the phone! Exceptionally long battery life features a talk time of 17 hours for extended use. Frequency: N\A; Answering System: Digital; Lines: 1; Telephone Type: Cordless.