Panasonic additional DECT 6.0 Digital Cordless Handset compatible with TGD & TGC Series Cordless Telephones. Additonal Handest Cordless Telephone. Sync up to 2 smartphones to make and receive cell calls throughout the house via Bluetooth. Access the convenience of Siri, Google Now and S Voice from your handsets with one-touch Voice Assist. DECT 6.0 Plus technology for superior clarity and range. Amplified Handset Volume with Dedicated Volume Key.