Digital Alarm Clock, (New Version) LED Alarm Clock, Dual Powered Alarm Clock for Bedroom, Home, Office, black 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 ModesThis 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 BrightnessDigital 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. 6.5 Colorful Digit DisplayThe 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.