Wide Angle Eyepieces: Compound Monocular Microscopes with 1 WF10x, 1 WF25x eyepieces, 1 2x magnifying lenses, high pixel electronic eyepieces, optical lens surface coating, wide-angle design. 185 Objective Lens: Real 185 achromatic objective lens, dramatically improves the imaging resolution and clarity effectively eliminates red, blue and green light, the image is clearer, adult microscope with different high power eyepieces can be used to reach 40X-2000X is a very good laboratory-grade biological microscope. Dual Control Focus System: Heavy-duty monocular microscope with coarse/fine focusing knobs ensures razor-sharp imaging of bacteria slides. Reinforced metal frame supports microscope, Ergonomically designed 45-degree tilted lens barrels, Allows students and adults to achieve a comfortable viewing angle.  LED Upper and Lower Light Source: CokiOptico microscope is equipped with adjustable LED light source, which is not affected by the external environment. The upper light source is suitable for observing opaque objects and the lower light source is suitable for observing specimens. This microscope can be used in various places with AA batteries, AC adapters. Versatile Application for All Ages: Ideal for adults, kids, and students. It's perfect for laboratory use in professional settings, as well as for school education and home - based science exploration. Encourages scientific curiosity and learning at every level. Complete Slides Set Included: Comes with a comprehensive set of slides, ready for immediate use. The slides cover a wide range of specimens, from plant cells to insect parts, providing a convenient and educational start for microscopy beginners. Complete STEM Learning Kit: Includes prepped slides*10, blank slides*10, coverslips*20, cotton swabs*5, Absorbent paper*5, tweezers, cell phone holders, knives, test tubes, droppers, brushes, dust covers, and shock-proof foam cloth packages, etc. And the CokiOptico microscope easy to store and carry, can help students/adults/amateur scientists/hobbyists explore the wonderful world of life.  Reliable Quality and Satisfactory after-sales service: Microscope to explore the mystery of life never stops, if you have any questions or dissatisfaction with the product, please to contact us on the Amazon order page., Our dedicated customer support team is always available to answer any questions, ensuring a worry - free purchasing experience.