The Panasonic Cordless Phone KX-TGF575S, with DECT 6.0 and Link2 Cell technology, answering system, dual keypad and 5 cordless phones handsets, allows you to link up to two cell or smart phones and integrate them into the telephone system via Bluetooth, no landline phone line required. All of your contacts stored into your cell or smart phone can be shared with this phone system allowing you access to important contacts right from the handset. Hear who's calling from across the room without having to get up with text-to-speech announcements in English and Spanish from the base unit and cordless handsets in the home/home office. The Panasonic home phone with answering machine also features easy call block, speakerphone, voice paging, power back up operation and advanced TAD (telephone answering device) functions tie it all together making this system one of the most reliable and functional systems available in the market today. Do not overload power outlets and extension cords. This can result in the risk of fire or electric shock.