1 [Easy operation]: 5 buttons to set time/date/temperature/alarm/adjust brightness, mute desk clock adjustment is simple and simple, will not make the operation too complicated, complete functions make the LED alarm clock work. 2 [Brightness adjustment]: Three-level brightness adjustment button, you can read the electronic clock in different light, to avoid eye discomfort caused by too bright and too dark, you can automatically/customize the brightness adjustment. 3 [Mirror digital clock display]: The 6.5-inch large mirror display allows you to clearly see the modern clock display from any angle in the room, and you can also use it as a mirror. 4 [Auto sleep and wake up]: wake up function. When you only use dry batteries, the desk clock will automatically go to sleep after 16 seconds, and will not display the screen to reduce energy consumption. However, the desk clock will record the time normally. When you want to wake him up, all you need is clapping or other sounds. 5 [USB power supply/battery power supply]: Not only supports USB plug-in use, but also supports dry battery use (3*AAA batteries, not included). When using dry batteries, the screen will automatically turn off after 16s, but it will not affect the change of time to save power. External force or sound will automatically wake up the screen. Plug-in use will keep the screen always on, if you want to turn it off, you can long press the middle button. 66. [Unique mirror design]: Slim and simple mirror design blends perfectly in your bedroom, office, etc.