Features: PORTABLE Theory: Biological Microscope Material: Metal Drawtube: Monocular Magnification Ratio: 500X & Under Certification: NONE Origin: Mainland China Model Number: 4X 10X 40X 100X Objective Lens. Dear customer, if you have any problems or need more information about this item, please send us a message and we will give to You more information or will give the best solutions to solve it. This item is in the category "Business & Industrial\Healthcare, Lab & Dental\Medical/Lab Equipment Attachments & Accessories\Microscope Parts & Accessories\Microscope Objectives". The seller is "ten_star_gates" and is located in this country: CN. This item can be shipped worldwide.