You can see mites in your home that are hard to see with the naked eye. The amazing world is clear! Also great for learning microscopes. You can observe plant veins, insect observation and skin surfaces with amazing clarity. Zoom 20 to 40 times Size: Approx. 2.2 x 3.9 x 1.3 inches (55 x 101 x 32 mm); Weight: Approx. 2.1 oz (55.6 g) (including batteries); Material: ABS resin, PP; Lens: Acrylic; Magnification: 20 - 40 times (Power Supply) Button batteries (3 x LR44 x 3) *Monitor batteries included; How to use): Press the light switch. Take the objective lens closer to the object you want to see, and look at the eyepiece. When it is blurred, operate the focusing lever and adjust the focus so that it looks crisp. Turn the zoom dial to adjust the magnification. (20 - 40 times) The images you see through this microscope can be reversible. Note: Please do not use this product for anything other than its intended purpose. Never look at the sun or strong light source. There is a risk of blindness. Do not disassemble this product. Please do not look directly at the LED light for a long time. Do not place in direct sunlight. It may cause a fire. Not waterproof, so please do not use or store in places with high moisture or humidity. Do not store in places with high temperature and humidity. Keep out of reach of infants.