Adjustable Brightness:Led Digital Alarm Clock has 3 brightness level. You can adjust the brightness from Low-Medium-Bright or turn off the led display. The low brightness display illuminates well in dark spaces,showing the time easily and protect your eyes. Easy to Read,Mini to Carry:This is a nice modern clock with cool,white readout. The bold numbers and color make it easy to read and stylish. Simple and small. Can put the small clock on night stand or dresser,doesnt take up much space. It can also used as a portable travel clock mini to carry. Outlet Powered and Battery Powered:Led digital clock can be outlet powered or battery powered(Note:A USB cord is included but no AC adapter and battery). When only using the battery,will be off the led displayafter 8 seconds enter the energy saving mode,pressing any button can wake up the display for 8 seconds. Dual Alarms Clock,Alarm Days Setting,Snooze Function:Led alarm clock can set dual alarms,one for getting up and could enjoy a 5-minute snooze and one for work/school reminder. Led Digital Alarm Clock can set different alarm days,meet your different alarm clock days needs. Week Display and 12/24H Function:Week and time can be displayed on the same screen,no need to switch screen,can read the week easily. Optional 12 or 24 hour time display according to your own habits.