Features: [Three Alarm Times]This LED alarm clock offers three alarm settings: 1-5 (Mon-Fri), 1-7 (daily), 6-7 (weekend). Set separate alarms for weekdays and weekends to enjoy a lie-in on your days off. The default time system is 24-hour. To switch to 12-hour, press the "Time Setting" button. [USB or Battery Powered]The alarm is powered by a USB cable (not included) or 3 AAA batteries (not included). Once batteries are installed, the set alarm will sound even if the power is disconnected, and the batteries will remember all alarm settings. A low battery icon will appear on the screen when the battery is low, reminding you to replace it promptly. The low battery icon disappears after battery replacement. [2 Alarms with Snooze]This teen alarm clock allows setting two independent alarms, each with its own on or off switch, perfect for coordinating different schedules. Enjoy a five-minute snooze function. The alarm volume gradually increases for a gentler wake-up. [4 Adjustable Brightness Levels]This digital bedside alarm clock caters to various brightness preferences. The lowest brightness level completely turns off the screen, ensuring undisturbed sleep. Note: When using battery power only, the screen brightness remains on for 10 seconds. For continuous screen display, a USB power supply is recommended. [Mini Travel Alarm Clock]Dimensions: 10 x 10 x 3.5 cm (3.93 x 3.93 x 1.37 inches). Its modern style complements various decors. Weighing only 150 grams, it's lightweight and portable, ideal for travel.