Designed and engineered in Japan, Uniden's DECT 1715 uses the Wireless Friendly DECT technology. Now the additional handset is available for DECT 17xx Series, allowing connection of up to 6 handsets from the one phone line to suit larger households - making life easier. We've introduced a handy feature Blackout Power Failure Protection Feature. When a Power Failure occurs, the charged handset temporarily supplies power to the base unit. You can then make and receives calls using a handset. These phones are ideally suited to high density living environments and have excellent array of features suitable for any home. They have great talking range, unique styling, 3 line backlit display LCD display and are Wireless (WiFi) Network friendly. The digital duplex speakerphone on the handset makes handsfree communication a breeze. This phone has a duplex speakerphone allowing you to have handsfree conversations and ensure you can keep working wile on the phone.