The BigTel 48 is a Big Button Desk Phone that is easy to use and works off the telephone line power only (no need for power supply) and it is easy to set up and use straight out of the box.This phone has been designed with high contrast, XL buttons that are easy to press - ideal for those living with dexterity issues - and has a digital display screen that states the current time and call duration. It features three direct-dial memory buttons and volume control for the earpiece and the ringer.