HD Digital Large Display6.7 inch LED mirror display, this clock has a large digital so it can be seen across the room. Besides the display, the buttons are clearly labeled and intuitive. With the ring base design, the alarm clock can stand firmly on the table without leaning easily. Brightness AdjustableThere are 3 kinds of brightness options for bedside clocks, high brightness, medium brightness, low brightness. Press the "SNOOZE" button for 3 seconds to enter the night mode setting. After opening, the clock will automatically adjust the brightness to the lowest from 6.00 pm-6.00 am every day. Easy to setThe top of the SMOUPING desk clock has buttons related to each function, so it isn't difficult to set up.The big snooze button helps you easily turn off the buzzer but dont need to open your eyes and enjoy 5 minutes of napping. Plug in Alarm Clock with Battery BackupThe clock needs to be plugged into USB source(5V1A /2A output),