This is one of the best student microscopes in the market today plus it's cordless! The upgraded MS-03 is equipped with four DIN objectives including the 100X oil immersion and comes standard with the mechanical stage slide holder for a full featured, reliable instrument at a fraction of the cost of professional scopes. Features: 10X Eyepiece with scale pointer; Monocular head rotatable 360 degrees; 4X, 10X, 40X and 100X (oil) Objectives; Total 40X to 1000X magnification; Coarse and fine focus controls; Spiral condenser N.A.1.25 with iris diaphragm; Variable intensity 4.5V LED cool illumination system; Built in rechargeable battery with detachable AC power cord; Vinyl dust cover and extra immersion oil. CE certified.