DECT 6.0 technology Digital answering system Dual caller ID/call waiting--stores 50 calls Caller ID announce HD audio Unsurpassed range Push-to-talk Full duplex handset and base speakerphones backlit handset keypad and display Expandable system up to 12 handsets (uses CL80103 accessory handset) 50 name and number phonebook directory Intercom between handset and base unit Conference between an outside line and up to 4 cordless handsets Voicemail waiting indicator English/Spanish/French setup menu Table- and wall-mountable Up to 14 minutes of digital recording time Message retrieval from handset ECO mode Quiet mode Mute Message time and date stamp Battery tupe--2.4V 400mAh Ni-MH Compatible with AT&T TL7600 cordless headset and TL80133 cordless speakerphone