Daybreak Digital Alarm Clock with Sunrise Simulation has a multi-function clock display with date, day of week, alarm, temperature and sunrise simulation. The amazing sunrise simulation alarm transitions the light from dark to fully lit over 20 minute duration leading up to the alarm time selected and you can choose lamp brightness with three options by tapping the light word on top each time. Press and hold light button to change to a 7-Color changing light mode or press again to choose just on