Multi-Functional Alarm Clock: This bedside clock features a 6.5-inch display screen, ensuring clear visibility of the time even from a distance. It displays time (12/24 hours) or date. The intuitive button design on the back allows for easy setting, making it an ideal choice for a reliable bedroom alarm! (NOTE: When powered by batteries, the Screen CAN'T always on.) 5 Adjustable Brightness & Night Mode: Simply press the "LIGHT" button to adjust 5 brightness levels (100% -60% -30% -3% - OFF). 3% brightness ensures that you are not disturbed during sleep. Additionally, long press the "LIGHT" button to activate night mode, and the bedside alarm will automatically dim to 3% from 19:00 to 7:00. 4 Alarm Modes & Snooze: Our digital clock offers four customizable alarm modes (1-5, 1-6, 1-7, 6-7), tailored to accommodate various workday and rest day schedules. For those moments when you need a bit more rest, simply press the "Snooze" button for an extra 9 minutes of sleep. DST & Memory Function: The digital alarm clock has DST function. When manually activated, the alarm will be adjusted to daylight saving time, which helps develop the habit of going to bed early and getting up early. Furthermore, it has a memory feature powered by batteries that retains settings during power outages (No need to reset with battery). Typc-c/Battery Powered: This LED alarm clock is powered by Typc-c port (included) or 3 AAA batteries (not included). The LED screen will only stay on continuously when Typc-c is powered on. When powered by the battery, the screen will automatically turn off after 10 seconds of inactivity, and you can activate it by pressing any button. (Note: The adapter is Not Included).