Brand: ATT. MPN: TR1909BLACK. Simple corded operation Reliable corded operation eliminates the search for a misplaced cordless handset while sturdy construction ensures long-lasting performance. Clean design makes it an easy fit on any counter or wall. Caller ID/call waiting Allows you to view the name number time and date of incoming calls at a glance even those on call waiting. No ac power required The telephone works without AC Power. For the Caller ID to function four AA batteries (not included) are necessary. 13-number speed dial Stores up to 13 phone numbers for easy dialing. 80 name and number caller ID history Stores name number time and date of up to 80 incoming calls whether or not the phone is answered. Numbers stored in the Caller ID history can be dialed directly from the memory. Last number redial Redials the last number called with the touch of a button.