GermGuardian 4-in-1 Cleaning System and Projector serves more than just as a fun, calming star projector. It acts as an air cleaner with a HEPA filter. This system cleans and purifies the air in any room, all while projecting one of three themes on the ceiling and walls. You can choose a starry sky, a safari of animals or under the sea shapes to be projected in different colors. The UV-C light kills germs and the HEPA filter catches many airborne bacteria and germs as well. This will give you peace of mind knowing that you are helping to keep illness at bay for your family. The unit is small enough to fit perfectly on a nightstand or dresser. At it’s highest speed, it can act as a white noise machine for the ultimate calming effect.