Know who's calling with Caller ID and Call Waiting. Handset displays the name, number, time, and date of incoming calls. With the touch of a button, the speakerphone makes hands-free conversations easy. The entire keypad illuminates with the LCD screen, allowing for easier viewing in dim light. Power conserving technology manages consumption for optimal battery performance. Silence the ringer on the handset and base unit immediately, or for an extended period of time. Expandable up to five handsets with only one phone jack (accessory VTE-CS6609 handset sold separately). Additional handsets can be placed anywhere in your home or office near an outlet, no phone jack necessary. Convenient, flexible, and easy-to-use.