Call block feature silences and disconnects calls that do not display a number or from unwanted callers that you've added to the phone's call block list so all annoying calls get blocked Intelligent ECO Mode automatically reduces the power consumption when it detects that a handset is near the base unit, offering a total of up to 10 hours of talk time when in ECO mode Night mode can be activated to prevent certain handsets from ringing for a specified period of time so you're not disturbed Other features include caller ID, handset locator, and intercom Its buttons, easy-to-read 1.6" LCD screen, and other elements were ergonomically designed for ease of use Backlit keypad and display makes it super easy to see the controls even in low light conditions Simple yet stylish compact design will blend in well with many different room interiors