This Pocket Microscope is perfect for kids on-the-go. It's handheld pocket-sized and battery-operated for exploration you can take anywhere! Zoom dial is used to adjust 20X to 40X magnification power Manufacturered by iQcrew. LED light allows for illumination of the field of view IQCrew's Early Explorer Series offers safe fun and easy-to-use optical instruments that make learning fun. Develop little scientist's STEM skills with this small but mighty pocket scope!