Backlight Button - Press the transparent mask on your face to turn on the night light. For manually illuminated dials, it goes out within five seconds; glows on the dial for easy nighttime viewing Battery powered - Uses 5 AA batteries (not included). Clock size 195*152*112mm (7.6"6"4.4") New Upgrade - Multifunctional alarm clock with light, snooze and more functions, easy to set up, suitable for everyone. The lights are bright enough to read at night, and the numbers are clear and large. Totally Silent - The sweeping second hand won't cause any annoying noises, it has no ticking at all, creating a peaceful sleeping environment. Love your life and love yourself. It protects you from radiation, next to the alarm clock, you no longer need to set an alarm in your phone, you can keep your phone away when you sleep. Decorate your home - 4 colors: Gold, Black, Blue, Silver. To meet different home decoration, the color atmosphere is warm.