DECT 6.0. Link2Cell feature allows to make and receive cell phone calls from the base phone. 2-line answering machine with message forwarding. Compatible with Caller ID, Call waiting and Call block services. 3.4 ft backlit display. Noise reduction. Cell phone contact transfer. Phone book memory up to 3,000 entries. Expandable up to 6 handsets and cell phones. Power back-up. Sold by each. Black.