4 DIN Achromatic objectives mounted in a revolving turret offer 6 magnification levels: 40X, 100X, 250X, 400X, 1000X, and 2500X The Professional Siedentopf binocular viewing head rotates 360° and locks into any viewing position and equipped with interchangeable wide-field 10X and 25X eyepieces fixed at an ergonomic 30° tilt to reduce neck strain, easily adjustable for different interpupillary distances without losing focus Double Layer Mechanical Stage, Coaxial Coarse and Fine Focusing, Abbe condenser N.A 1.25 with Iris Diaphragm, and Blue Filter LED illumination system ensure that you always have a high-quality light source for your bright-field microscope studies Excellent for clinicians, high school and university science students, and enthusiastic hobbyists alike