Large LED display and Snooze function: This digital alarm clock has a large 6.7 inch LED display, making it easy to read; The Snooze button helps you easily turn off the alarm clock without opening your eyes. Can set snooze time from 1 to 60 minutes. (Default snooze time is 5 minutes) Adjustable brightness: Clear and comfortable visual sense, it will automatically darken at 6:00 p.m. When plugged in with a USB cable, the LED light will always be on. When battery mode is used, the screen will automatically turn off in 10 seconds. You can activate the screen by voice or press any key to turn on the screen. Press and hold "LIGHT / SNOOZE" in any mode for 3 seconds to turn off the screen. USB or Battery Powered: Alarm clocks can be powered by USB cable or 3 AAA batteries (not included). NOTICED: If the alarm clock is working via battery usage, the alarm clock will turn on for 5 seconds then turn off, and you can activate the opening screen by tapping the sound. Save energy and improve your sleep at night. The clock will be on all the time if via USB.Easy to use and ideal gift: The clock was designed with absolute simplicity in mind and you will have no problem using it. Exquisite digital clock with accurate time for heavy sleepers, children, youth, students and seniors - The favorable size makes it ideal for your needs of a travel alarm clock, desk clock or clock bedside.