Feature 1、High Magnification: Professional microscope. 3pcs achromatic objective lens of 4X, 10X, 100X are installed on a rotating turntable and 4pcs eyepiece with wide field of view WF10X and WF50X are fixed at a 45 degree vertical tilt to reduce eye and neck fatigue. This 40X‑5000X biological microscope can help students, children, adults learn the world of life. 2、Lighting System: Duplex microscope. The microscope has incident and transmission LEDs that can adjust the brightness of the light source by rotating the knob. It can see both opaque objects illuminated from above, such as hair, fabric, or some leaves, flowers, etc., and semi transparent specimens illuminated from below, making it easy to use. 3、Fine Focusing and Metal Body: Adult microscope. The binocular microscope has a sturdy metal frame and coarse and fine focusing knob, ensuring details and accurate focus adjustment, 0.65 NA single lens condenser with circular aperture ensures easy focus adjustment and creates clearer and sharper images. Suitable for children aged 6 and above to stay. 4、A Educational Gift: Professional microscope. This microscope is designed specifically for children and students to explore and understand the world of sciences. 5、Wide Application: Able to facilitate clinical research, breeding testing, biochemical testing for professionals and enthusiastic amateurs. Item Type: Binocular Microscope500 Battery: 3 x 1.5V AA battery, shipped without battery. Magnification of The Objective Lens on The Host: 4X, 10X, 100X. Matching Eyepiece: 2 x WF10X, 2 x WF50X. Focus: Coaxial dual wheel handwheel for coarse adjustment and fine adjustment. Spotlight: 5 color optical cable. Package List 1 x Binocular Microscope 2 x 10X Eyepiece 2 x 50X Eyepiece 1 x User Manual 1 x Power Supply 1 x Cloth Bag