rotating the lamp can adjust the size of the light casting ring. The further the distance, the greater the projection of the sunset light onto the wall or ceiling. The light casts amazing colored circular lights on the walls, ceiling and floor. The angle of the lamp head can be adjusted and this led light can be rotated 360 degree. Small size and light weight, unique design is great for Car, bedroom, camping, party, studio, or adding a interesting and romantic atmosphere to your Leisure living area. And the night light can be powered instantly by plug in any USB interfaces, safer to use.