Power: The alarm clock is powered by an integrated USB cable. The product includes an EU adapter. USB Port for Charging Phones and Tablets: There are two USB ports on the back of the alarm clock. One is used to power the alarm clock, and the other is for charging mobile phones, tablets, and MP3 players. Powerful Functions: The screen text on the digital alarm clock can be set to red, blue, or white. Brightness can be adjusted to high, medium, or low levels to help protect your vision. The alarm clock has a built-in light-sensitive chip that automatically adjusts screen brightness based on ambient light. Dual Alarm with Snooze Function: This digital alarm clock allows you to set two separate alarms to better manage your schedule. The snooze function lets you extend sleep by 9 minutes with a simple press of the "SNOOZE" button on top. Alarm volume is adjustable across 7 levels, ranging from 92dB to 110dB. 7 Levels of Adjustable Brightness: Featuring large LED digits for easy reading day or night, the brightness can be adjusted to 7 different levels according to personal preference. Supports 12/24-hour format switching, dual alarm, and snooze function. Easy to Use: Designed for bedside use, the alarm clock has large, clearly labeled buttons that make setting time and alarms simple and intuitive. The large snooze button is located on top for easy access, even when half-asleep. Note: A protective film is applied to the mirror surface. Please remove it to enjoy a clear display.