【Large Digital Display】The digital clock is equipped with a 9.1 \" LED display, a large digital display, and the numbers are moderately spaced, easy to read, so you can clearly see the time even from a distance and from all angles. In addition, you can clearly see the numbers on the screen even at night. 【3 Alarm Modes】This digital alarm clock can not only be hung on the wall but also placed on the desk, providing a good view for seniors, children, and adults, and getting time information accurately and clearly. 3 alarm modes to choose from when you want to wake up at a fixed time: 1-5 for alarm from Monday to Friday, 1-6 for alarm from Monday to Saturday, 1-7 for alarm from Monday to Sunday. 【Adjustable Brightness and Automatic Night Mode】This large LED display alarm clock comes with 3 levels of brightness adjustment according to your needs. The brightness automatically dims; it automatically dims by default between 10 PM and 6 AM. In addition, the plug-in LED digital wall clock supports daylight saving time. 【2 Groups of Alarms and Snooze Function】2 group alarms allow you to set separate wake-up times. When the alarm rings, long-press any button to turn off the alarm and enter the next alarm mode. Short-press any button to start snooze. Note: The \"long press \" mentioned above is a long press for 3 seconds, and 5 seconds without operation automatically confirms the output. 【USB and Battery Powered】The LED digital wall clock is powered by 3 AAA batteries (not included) or a USB cable (included). NOTE: If you only use the battery, it has time memory function and voice control function, but if you only use the USB cable, it does not have these 2 functions. You can choose to use USB for charging if you want the alarm screen to always be on.