Inspire curiosity, foster a love of knowledge and start the young researcher off with the NSI 150x/450x/900x Microscope Kit from the world"s largest museum and research complex, the Smithsonian Institution. Magnify microscopic subjects at 150x, 450x and 900x to capture details and learn about the very smallest of our earth"s substances and organisms. All of the classic microscope components are included, like a built-in mirror and light for either manual or direct illumination. Made from durable plastic, this microscope kit includes lots of authentic accessories, like blank and prepared slides with storage case and laboratory tools such as a petri dish and a pipette. Detailed instructions are also included. Ages 5-10 years. Small kids microscope parts are a choking hazard; not for children under 3 years. Adult supervision is required.