The Uniden DCX640 is a cordless phone that operates on the 2.4 GHz frequency, ensuring clear transmission without causing interference with other wireless devices. To make hands-free communication better, this Uniden 1-line phone has integrated speakerphone. You can use this Uniden cordless phone as an intercom option allowing you to talk with more than one person at a same time. You can see the time and battery status on the backlit display of this Uniden 1-line phone. In the Uniden DCX640, you can store 100 contact names and numbers sorted in an alphabetical order for easy calling. The mute button feature in this Uniden cordless phone ensures that you are left undisturbed when you want to. The Uniden DCX640 phone also features Call Waiting, Caller ID, Handset Locator, Selectable Ringtones, and Voice Mail.