Feature: 1. High Magnification: This microscope with 3 achromatic objective lenses ( 4X, 10X, 40X ) mounted on a rotating turntable and 2 eyepieces ( Wide Field of View WF10X and WF16X ) with high magnification can help you to observe small details. 2. Illumination System: This microscope features incident and transmitted LEDs with adjustable light source brightness by turning a knob, allowing you to see both opaque objects (such as hair, fabric or some leaves, flowers, etc.) illuminated from above and translucent specimens illuminated from below, making it easy to use. 3. Fine Focus: This microscope has fine focusing on both sides and a 0.65 NA single lens spotting scope with a disk diaphragm to ensure easy focus adjustment and create clearer, sharper images. 4. Metal Body: This microscope features a sturdy metal frame which is sturdy and wear resistant, and has a long service life. 5. Wide Application: This microscope has a wide range of applications and can be used for clinical research, breeding tests, biochemical tests for professionals and enthusiastic amateurs. Specification: Item Type: Monocular Biological Microscope Material: Aluminum Alloy Battery: 1.5V AA Battery x 3 ( Shipped Without Battery ) Host Objective Magnification: 4X, 10X, 40X Matching Eyepieces: 10X, 16X Eyepieces Objective Lens to Main Image Distance: Approx. 19.5mm/0.77in Illumination: 3Wled ( Adjustable Brightness ). Package List: 1 x Microscope1 x 10X Eyepiece 1 x 16X Eyepiece 1 x Manual1 x Cloth Bag