Binocular Biological Microscope (Zeiss Model) Specification: Viewing Head: Seidentopf Binocular Head Eyepiece:WF10X, WF16X Achromatic objective: 4X, 10X, 40X(s), 100X(s, oil) Stage: Double layers mechnical stage, 155x145mm/80x50mm Condenser: Abbe NA=1.25 with Iris diaphrame and filter Kohler Illumination: 6V-30W,Halogen lamp, Adjustable brightness Focusing: Coaxial Coarse & Fine Adjustment, Focusing range 30mm, Focusing interval 0.002mm Standard accessory: 6V-30W spare halogen lmp ---1pcs, BGX1-20(0.5A) fuse ---2pcs Blue ground glass filter---1pc, immersion---1 bottle, Dust cover --- 1pc