Grades 3 and up. With this durable, lightweight telescope, young scientists can explore the natural wonders of the earth, from birds to animals, or the craters of the moon and beyond. The 50mm achromatic objective lens, all-glass optics, and rack and pinion focusing deliver clear, up-close images at magnifications from 20x to 80x. Easy-to-use refractor design and table-top tripod make it perfect for backyard exploring and on-the-go discovery. Comes with two interchangeable eyepieces and an image erector for viewing terrestrial subjects.