Features: A brilliant microscope set for kids to discover the wonders of science. It includes a 8" microscope with adjustable light, tweezers, slides, slide covers, 2 collection jars and collection box. Suitable for ages 8 years and up this would also be an ideal gift idea for kids. The microscope features 3 levels of magnification(100x, 200x, 450x).They do give good clear images that should be more than adequate for most children's applications Requires 2 x AA batteries (not included). A great educational science toy kit for kid. Fitment: Suitable for ages 8 years and up. How to operate this microscope? 1. Put two AA batteries into the base Open the rear cover - 1st, open the rubber bottom cover. 2nd,open the plastic bottom cover with screwdriver. 2. Each pack does not include the battery. 3. Tilt the mirror body and adjust the position of the light emitting mirror. So that all the lights are focused on the mirror. 4. When enough light is launched by the mirror, we can see the image through the eyepiece. 5. Place the specimen on the platform and clamp with the retaining clip. 6. Select the magnification you need. Please remeber that the larger the objective lens, the larger the magnification. Generally, start with low multiples. 7. Turn the focusing knob so that the objective len approaches the specimen. Then move the barrel upwards until the image is clear. 8. If the laboratory light is weak and the image is not clear, it is recommended to use the illuminator as a light source. Specification: Product name: Microscope Set Condition: New Material: plastic Color: black Magnification zoom: 100x, 200x, 450x Age Level: 8-11 Years Battery: 2 x 1.5V AA batteries (not included) Dimension: 12x7.4x21cm(LxWxH) Quantity: 1 set