[Three Alarm Timings] The LED alarm clock has three alarm timings, 1-5 (Monday to Friday), 1-7 (everyday), 6-7 (weekend mode), you You can set the alarm clock for weekdays and weekends separately, so you can sleep late on weekends. The default time system for the alarm clock is 24 hours, to switch to 12 hours, please press the "TIME SET" button [USB or Battery Powered] The morning alarm clock is powered by USB cable or 3 AAA batteries (included), With the battery installed, the set alarm will sound even if mains is disconnected, and the battery will remember all alarm settings. When the battery is low, the screen displays a low battery icon to remind you to replace the battery as soon as possible. After replacing the battery, the low battery icon disappears [2 alarms with Snooze] The teen alarm clock can set two alarms, and each alarm has an independent switch, Convenient for you and your family to have different schedules, you can take a nap for five minutes. In addition, when the alarm rings, the volume gradually increases, allowing you to wake up comfortably from your dream. [4 Adjustable Brightness Levels] The bedside digital alarm clock best meets the brightness needs of different people. The alarm clock's lowest brightness level turns off the screen completely and won't disturb your sleep at night. Noticed : When using only the battery, the screen brightness lasts for 10 seconds. If you want the screen to be always on, it is recommended to use USB power [Mini Travel Bedside Alarm Clock] Size: 10 x 10 x 3.5 cm (3.93 x 3.93 x 1.37 in), extremely modern in style, and easily blends in with your various decors. The alarm clock weighs only 150 grams, which makes it lightweight and convenient to carry, you can also take it with you when you travel