【Auto Adjust LED Brightness】 The alarm clock has a professional sensor which can detect the ambient light. When the ambient light is dark, the LED digital brightness will be lowered automatically, to avoid affecting our sleep at night. 【Dual USB port】 The LED alarm clock with two USB ports can charge two electronic equipments at the same time, such as mobile phones / tablet PC and other equipment. 【2 kinds of placement】 The LED alarm clock is designed with two placement methods. It can be placed on the desktop, as a desktop clock. It can also be hung on the wall, as a wall clock. 【Mirror design】 The front LED screen with a mirror design, enable us check the time and check our face at the same time. 【Large screen LED display】 Large screen displays the digital very clear. The screen size is 15.9cm * 7.8cm and the LED digital size is 12.4cm * 4.8cm. Itrsquos more than a clock. Put on the desktop or bedside table, it not only can remind us of the time with alarm, but also can charge our electronic equipment such as our mobile phones, and tablet PCs with its 2 USB ports. (USB data cable is not included in the package) Automatically adjust its brightness according to the ambient light can also bring us convenience. To avoid the light too bright for us to sleep at night, we designed the clock with automatic brightness adjustment function. When the ambient light becomes dark, it automatically darkens; when the ambient light becomes bright, it automatically brightens, eliminating the trouble of manual adjustment. But if you are more accustomed to manual adjustment, you can also manually adjust the brightness mode. Product parameter Material: LED light, ABS Size: 15.8cm*8.5cm*1.2cm Time display: 4-digit time display Brightness level: high, medium, low (auto adjust/manual adjustment) Alarm function Snooze Function: Snooze last for 2 minutes Working voltage: 3.0 v-5v Quiescent current: <30uA (LED does not show time) Power supply: When powered by DC power, the LED is long bright and all functions are normal. When powered by button battery, the LED lights canrsquot light, but can only keep the time normal walking. Packing list 1timesLED alarm clock 1timesManual Notice: 1. This clock works by USB wire, you can plug it to PC or other adapter such as phone adapter. 2.The product screen has a protective film on the surface that can be removed. 3.The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.