Digital alarm clock are on the LED screen With temperature display 12 and 24 hour time display Operates from battery and mains or USB (USB cable is included in the package week, time, calender, date, temperature display in one screen touch function, three level of brightness adjustment and turn off display night mode, automatically adjust brightness(22:00-6:00) three setsv of alarm with snooze, each alarm individual setting with single dayoff, double dayoff, everyday, mode