3 Brightness Levels + Auto Adjust - The electronic clock LED display screen offers three kinds of brightness: low, medium and high. You can choose the brightness freely. The LED clock is equipped with a photosensitive sensor that automatically adjusts its brightness according to the light intensity on the screen. 7 in large screen + mirror surface - The digital clock is equipped with a 7-inch LED display, which allows you to read the time clearly anywhere in the room. Alarm clock with unique acrylic mirror technology, fashion and beautiful, can also be used as a makeup mirror. Dual USB charging port + shutdown memory - The mirror clock uses a power supply DC 5V/1A USB with 2 USB ports, which allows you to charge your mobile phone and tablet. The modern clock is equipped with a CR2016 battery when the alarm is disconnected. When USB power is available, you can continue to record alarm data. Removable base + wall hanging hole - When the clock is installed on the base, it is a clock desk for office, bed, dressing room; When the clock is removed from the base, it is a wall clock, which can be mounted on the wall through the hanging hole on the back, and is suitable for bedrooms, offices, living rooms and kitchens. < p>Sleep Mode + Night Mode - The digital alarm snooze button sits on the top of the watch and can be easily turned off, so you have 5-60 minutes (adjustable) of extra sleep time. Night mode means the LED automatically switches to the lowest brightness display state at night. It does not affect your sleep.