[Large LED display screen] Large display screen: 265mm * 70mm (10.4inch * 2.7inch), can read real-time time from long distance. This LED electronic alarm clock has temperature ( C / F), date, time (12/24 hours) and 2 alarms.[2 alarms and 40 musics] Two alarms allow you to set two different wake-up times, 40 different ringtones and 4 types of volume to choose from The USB Desktop Clock can only work when it is connected to a power source. The built-in coin cell battery can save your clock settings in the event of a power failure.[Bedside alarm clock and wall clock] There is a groove on the back of the alarm clock lamp, which can be easily hung on the wall like a wall clock or placed on the desk at will. The elegant and simple alarm clock can decorate your living room and bedroom, and can also be used as a mirror when needed.[Auto dimming] The digital clock can be connected via USB cable, and the brightness can be adjusted automatically over time, or you can manually adjust the brightness in 7 levels or turn off the brightness. The digital clock which does not interfere with lights at night is very suitable for those who sleep soundly.