Designed by a scientist and mother of two pre-schoolers, GeoSafari Jr., my First Microscope allows kids to see magnified hidden worlds with ease This fully functional microscope is a real tool with a range of magnification designed with a pre-schooler in mind and by starting with the 2.5x view it helps with the focus of knob turned as far away from your child as it will go. Features: - Magnified views can be challenging for little ones to understand - Your pre-schooler can orient herself to the item she's viewing and as she turns the focusing knob towards herself, she can gradually pull away to an 8x view - The wide field of view of these lower magnifications is critical to little ones understanding - A bright LED with easy push-button action lights up details for even more discoveries - One size fits all - Age: 3 years and older Cotents: - 2 extra-large eyepieces, no need to close one eye - A chunky - Kid-sized focusing knob - You will need 3 AAA batteries which is, not included