VTech DS6301 Accessory Cordless Handset, Silver/Black | Requires a VTech DS6311, DS6321, or DS6322 Expandable Phone System to Operate DECT 6.0 Ditigal Technology Interference free for crystal clear conversations Accessory Handset Only -requires the DS6301 to operate Caller ID / Call Waiting - stores 50 calls 50 Name and Number phonebook directory