Vtech CS6609 Accessory Handset with Caller ID/Call Waiting

Caller ID/Call Waiting Quiet Mode silences the ringer 50 name and number Caller ID history 50 name and number phonebook directory Handset speakerphone Accessory handset only-requires a CS6619, CS6629, or CS6649 series phone to operate DECT 6.0 Digital technology ECO Mode power-conserving technology Backlit keypad and display Intercom between handset and base unit Energy efficient - designed to use less energy than alternative products, potentially helping you save money and reduce your carbon footprint.