EASY TO USE AND READ: The 5 control buttons are designed on the front instead of the side or the back, making the operation more intuitive and simple. The 3.23-inch clear LCD digital display is easy to read the time. Multifunction clock with backlight: On-screen display time (12/24 hour format switchable), alarm time, room temperature (F/C), month, date and day of the week. And with 10-second blue backlight, let you easily see the numbers at night or in the dark, no need to turn on the lights to avoid disturbing others COMPACT SIZE AND MIRROR: The mini (9.04cm*8.51cm*1.3cm) clock has a foldable flip cover that can be used as a stand or vanity mirror. It's small enough to fit in your handbag or purse. Coin Battery Powered: Powered by one CR2032 battery (included), lasts 6-8 months. Bonus extra spare battery.