A Great Affordable High Power Student Microscope. 45 Degree Inclined 360 Degree Swiveling Monocular Head with Locked-in Eyepiece. Up and down LEDs Illumination System. Plain Stage with Clips and Stain Resistant Finish. Fully Coated Optical System, High Resolution Offering Sharp Images. Specification: Eyepieces: WF16X, with wide filed of view. Achromatic objective lens: 3 lens in metal barrels, built with high quality optical glass with 4x, 10x and 40x power; 360 degree rotatable, and 45 degree inclined for convenient observation with comfortable head posture. Magnification:64x,160x,640x Metal body and focus system: durable for frequent use either in a school laboratory or at home. Illumination: top and bottom LED lights which are mains powered. Light brightness adjustment. Disk diaphragm: with 6 colour filter. Power supply 1: 110V230V Power supply 2: 3 AA batteries(not include in the package) Package Included: microscope*1 If you have any questions about the product, please contact me, we will contact you within 24 hours and give you a satisfactory answer. You can place the test item on the board for close observation