YOHAPP Digital Alarm Clock LED Mini With Blue Backlight (Size:4.9*2.3*2.2 Inch) (Color: Blue) YOHAPP Alarm Clock Thermometer is a multi-function clock, time, calendar, alarm clock, date, you can not miss any one Alarm with music,7 different alarm songs and 2 different "didi" sound The Back Light of The Digital Clock Would be Light about 5 Seconds after Press "LIGHT" Button Adjustable Time and Date Format,Circumstance Temperature Monitoring Function,Make Yourself a Easy Life Note:The Back Light of The Digital Clock can Keep 5 Seconds after Press "LIGHT" Button ,can not keep all the time,The Dimension Length 2.3 inches,Width 2.2 inches,Height 4.9 inches.