This clock incorporates Night Vision Technology. This cordless battery operated feature allows you to see the time in a dark room. Making it hands-free, the clock automatically senses extremely low light in the room, and illuminates its soft green glowing backlight so you can identify the time in a darkened room. Its integrated sensor will automatically shut off the backlight when the light in room brightens to save power. You can also activate a bright backlight display anytime by pressing the SNOOZE/LIGHT bar. Easy access time set buttons are located on the top of clock with a simple on/off switch to activate/deactivate the alarm, and easy-to-read 1.2 inch display. Its modernized metallic blue case offers a contemporary look and battery operation, makes it portable. With the night vision alarm clock, you get a straightforward, simple approach to waking up on time. The five-minute snooze button is handy for those mornings when you'd rather sleep a bit later than wake up right away. Use the clock at home or take it with you while traveling as it?s cordless.