An item as common as a sliver of onion skin reveals unexpected dimensions and ignites curiosity when viewed through the Explore One 45 Piece 900X Microscope Set with Case. One of the best STEM toys you can buy for your child is a microscope, because they can be used indoors or outdoors to explore hidden worlds and it prepares your child for a life of science learning. With this 900X Microscope Kit, young scientists will find everything they need to begin exploring the hidden microscopic realm. A true classic, this 900x Microscope Kit is a low cost, high-quality microscope. It combines a 20x eyepiece with a rotating turret of three objective lenses to offer magnifications of 100x, 400x and 900x and *built-in illumination. It also includes a color filter wheel to to enhance contrast to give specimens extra definition, see features below. Accessories include collection/prepping tools, prepared and blank slides, a shrimp hatchery and more.