About this item ⏰NOTE: Only powered by USB cable, the screen can be stay on and without memory function. This alarm clock with a time memory function when using AAA. ⏰【4 Display Modes】This digital alarm clock with large digit, clock, Date and Temperature display; 12/24 hour format can be switched at will, allowing you to easily grasp the time, meeting your daily need. ⏰【3 Levels of Brightness】Digital alarm clock provides 3 different levels of brightness, which can be adjusted to a comfortable brightness manually to protect your eyes and save energy at night. ⏰【2 Ways of Power Supply】It supports USB power supply and AAA supply. This alarm clock has a time memory function when using AAA; When powered by USB alone, there is no memory function after power off. NOTE: The screen will not always be on when the AAA power supply instead of the USB power. ⏰【6.5” Colorful Digit Display】The color font used in this digital alarm clock is an update and iteration of the ordinary digital alarm clock monochrome font, making the alarm clock a decoration on your desk, dazzling. ⏰Heartwarning Reminder: ???? ??? ????? ??????, ??? ???? ???? "?? ~ ?? ~ ?? ~", ??? ??? ????? ????? ????? ???? ?? ??? ?????? ???? ?????. If there are any problems with the use or function of the product, or if the product is defective/damaged, please contact the seller first, we will do our best to solve the problem for you.