2 pcs prisms can overlap : 16-facet prism + 3 layers prism (8+16 +16) 1 pcs combined gobo wheel : 12 pcs fixed gobo + 6 pcs glass gobo 1000M shoot distance Use 4th generation optic tec , 30% more bright than ordinary 7R 4 layers Prisms overlap , Colorful prism , Rainbow effect