DESC: A 2.4 GHz digital phone from Uniden the DCT 646 is multi-user expandable and comes with a number of useful features including a second handset and extra charging cradle Sleek and stylish it supports up to two optional handsets total of four The phone utilizes the 2.4 GHz frequency and digital technology for clearer more intelligible reception than traditional 900 MHz phones An autoscan features automatically detects the best channel available Caller ID/call waiting compatible the DCT 646 has 100 programmable caller ID memory locations A memory location transfer feature lets uses synchronize the memory locations of their handsets An auto-talk function allows you to answer calls simply by removing the phone from its cradle while the display-and-dial feature lets you easily scroll through the list of calls and dial with the touch of a button A voicemail indicator lets you know when you have received messages Twenty different distinctive ring options are provided while handset and ringer volume controls allow you