Turn on night light automatically - The alarm clock automatically emits soft blue lights in the dark (25% brightness). The dim lighting does not affect sleep, but it is enough so that you can see the time clearly. (Note: The sensor light cannot be turned off manually, and it will turn off automatically when the light is bright enough). Manually press the top light button and you will get a light that lasts 5 seconds (100% brightness).Large Display - The 4-inch LCD screen shows bold numbers to tell the time at a glance. Only available in 12-hour format, large screen for displaying the time, alarm time and date, perfect for children, the elderly or the visually impaired.EASY TO USE - This watch has an intuitive set button that is easy to use even without a manual. The snooze button is big enough to be pressed easily even when half asleep.Very Loud Alarms and Snooze - The alarm rings gradually, not suddenly, lasts 60 seconds. When the alarm rings, press the SNOOZE button and the alarm will ring again in 8 minutes.Battery Operated - Powered by 3 AA batteries (not included). No USB cable, easy to use. It won't take up too much space, but it is sure to get your attention. The alarm clock can be used as a clock for desks and bedside tables in the bedroom.