[Dual Power Supply]: Digital clock powered by USB cable, or 3 AAA batteries backup powered(not included). If via battery, the screen will light for 5s, and then off, need to press any button to see the time; if via USB, clock will light all the time. [Intimate Design]: Alarm clock sound is from weak to strong, from slow to fast, let you wake up naturally during sleep. Set snooze time, unless you manually pause, or else alarm clock will remind you regularly. [Simple & Stylish]: Digital alarm clock with mirror surface function, can be also used as a mirror. LED display, bold font, easy to read. Perfect for your bedroom, living room, office. [Level 2 Display Brightness]: The brightness of the digital alarm clock can be adjusted, 2 level brightness; You can clearly see the alarm time or temperature at night. [Multifunctional Digital Clock]: LED alarm clock with mirror design, large display, has time, alarm clock, snooze function, temperature display, night mode and mirroring. Colour: white Material: plastic Size: 14x3.4x5.5cm Package Contents: 1 * Alarm clock 1 * USB cable Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.