This economic monocular compound microscope is designed for kids, students, or professionals with tight budget. But it is not a toy, it's a real microscope which provides super clear images. The structure and frame is made of metal and the lenses are made of hight quality optical glass. The total magnification is 40X, 100X and 400X. This microscope has some features designed for kids and students using: light weight, small size, locked-in eyepieces to avoid lens drop and damage, and LED light providing cool and bright light. This microscope can work on rechargeable batteries. That means you can use the microscope in the field, on the trip, in your backyard, or anywhere that electrical power is not available. The Benefits of LED Light: Extremely low heat, great for little kids Low power consumption, low expense Being able to run on batteries, excellent for outdoor activities Very long life time, no hassle with changing bulbs