My First Lab Microscope is a great scientific instrument recommended for ages 11 and up. We recommend purchasing the "Microscope Accessory Kit" along with the microscope, as it contains supplies and basic instructions for preparing your own slides for observation. DR Instruments also offers a wide range of Medical Supplies, Laboratory equipment, including Safety Goggles, Lab Glassware, Microscopes, and Lab Coats. Features: Real optical glass lenses Wide-field eyepiece with the pointer (10X) The inclined, 360-degree rotating head provides more comfort and ease of use Revolving the nosepiece with click stops keeps your specimen centered while changing the magnification Three achromatic objective lenses ( 4X, 10X, 40X ) Magnification power 40X, 100X and 400X Built-in 15W illumination Sturdy all-metal construction UL and CSA approved 3-wire power cord One-year manufacturer limited warranty Overall size 4.5" x 6" x 11" Weight 3.5 lbs Includes: Dust cover Five prepared glass slides