Two colors LED back light, Four functions in four different directions, Calendar clock ,Music alarm ,Countdown timer Thermometer Four sides rotate changing color clock/calendar:music alarm,countdown timer,thermometer function.material: ABS logo:silkcreen printingbattery: 3pcs AAA(optional)LED light:includedunit size 76x37x76mmpacking:150pcs/ctnmeas 45x43.5x27cmGW 15kgs