The VE-MI microscope was specially designed for educational purposes. Ideal for basic science applications and fieldwork thanks to its rechargeable battery and up to 40 continuous hours of usage on a single charge. Itfts simple design and excellent quality make it ideal for the observation of flowers, plants, fungi, pollen, insect extremities, protozoa, and mold on bread or fruit. Product Specifications: EYEPIECE WF 10X/18 mm with block screw. HEAD Monocular head, 45° inclined and 360° rotatable NOSEPIECE Triple nosepiece with click-stops. OBJECTIVES 4X, 10X and 40X, achromatic optics and color ring for easy identification. STAND Stative, robust and reinforced with epoxy paint finish.. STAGE Flat, 3.70in x 3.70in with two stage clips and height adjustment. CONDENSER N.A. 0.65. DIAPHRAGM Disk type. FOCUSING Coarse anti-slip control knobs. ILLUMINATION LED WEIGHT 6.16 lb / 2.79 kg. DIMENSIONS 6.69in x 10.24in x 14.96in / 169.9 x 260 x 379.9 mm POWER SUPPLY Three 1.2V AA rechargeable batteries (included) for 40 hours of continuous operation. 110-240, 50/60 Hz. Accesories included: AC/DC adapter. Dust cover.