AT&T CLP99383 DECT 6.0 Expandable Cordless Phone with Bluetooth Connect to Cell, Dual Caller ID/Call Waiting and Answering System, 3 Handsets, Silver/Black Dect 6.0 Technology Up to 14 Minutes of Digital Recording Time Store 6000 Directories from up to 4 Different Cell Phones Mobile Notifications Virtual Multi-Line Operation Caller ID Announce DSL Subscribers may need to us a DSL Filter For optimal performance batteries should be charged for 16 hours prior to use