Alarmclock Display Has 3 Different Light Levels White

The Display Has 3 Different Light Levels So You Can Choose The Brightness That Suits You The WakeUp Function Works Even If You Turn Off The Screen You Can Select The Time Format 12 Or 24Hour Display The Alarm Clock Is Powered By Using The Included Usb Cable The Clock Never Illuminates When The Usb Cable Is Disconnected If You Add A Battery Your Settings Are Saved And The Clock Continues To Run And Displays The Correct Time When The Usb Cable Is Reconnected