There is a whole tiny world to discover under the lens of your National Geographic 100x Microscope . This microscope features 3 magnifications: 25x, 50x and 100x and has an electric illuminator for clear viewing. Use the 3 prepared slides or get out there and create your own slides using the 8 blank slides , 3 specimen vials, tweezers, petri dish , test tube and tweezers. There are millions of tiny plants, fabrics and living animals for you to find and examine around the home and outside. The National Geographic 47 Piece 100x Microscope Set is a great way to encourage an interest in science.