Dect 6.0 two-line telephone system with one cordless handset is Bluetooth capable so you can make and receive your cell phone calls on all handsets. Download up to 6,000 cell phonebook entries to cordless handset for use with your cell phone calls or your landline calls. Pair with up to four Bluetooth cell phones with the base with corded handset and simultaneously connect up to two Bluetooth cell phones to manage calls. Dect 6.0 technology delivers up to 45 percent more range over 2.4 GHz and 5.8 GHz phone systems without needing a boost in power. Telephone system also offers Caller ID/Call Waiting with a 50 name/number history, 14-minute digital answering machine, dial-in-base speakerphone, handset speakerphone, equalizer for customized audio, call transfer using the intercom, call screening/intercept, message retrieval from handsets, and remote access. Expand up to 12 handsets on a single phone jack. Setup menu is in English, Spanish and French. Energy Star qualified.