Adventurous young explorer in need of a portable instrument for field work will love this Walter Products 2060 series microscope. It has achromatic 4X, 10X, and 40XR parfocaled and paracentred objective lenses, offering 40X to 400X magnification. This microscope has prism light gathering system used for illumination, so it doesn't need power to work. | Walter Products 2060 Series 40x-400x Compound Microscope