Large LED Display & Snooze Function: This digital alarm clock features a large 6.7-inch LED display that is easy to read. Its thin profile doubles as a mirror; the snooze button lets you easily turn off the alarm without opening your eyes. The snooze time can be set from 1 to 60 minutes (the default snooze time is 5 minutes). Adjustable Brightness: Bright and easy to see, auto shut off at 6pm. The LED light stays on when the device is plugged in using the USB cable. In battery mode, the screen will automatically turn off within 10 seconds. You can activate the screen by voice or press any key to turn on the screen. Press "LIGHT/SNOOZE" for 3 seconds in any mode to turn off the screen. USB or Battery Powered: The alarm clock can be powered by a USB cable or 3 AAA batteries (not provided). Note: If the alarm clock is battery powered, it will turn on for 5 seconds and then turn off, you can activate the turn on screen by clicking on the sound. Save energy and improve sleep. If working via USB, the alarm will always be on. ;EASY TO USE AND GREAT GIFT: The design of the clock is absolutely simple, you won't have any issues using it. Sophisticated digital clock with accurate time for sleepers, children, young adults, students and seniors - its favorable size makes it your ideal travel alarm clock, desk clock or bedside clock.