Infinity Independent Achromatic Optical System 
· Seidentopf binocular viewing head, inclined 30º, 48-75mm interpupillary distance settings, ±5 º Diopter adjustment 
· WF10X plan eyepieces, 20mm field of view, high eye point up to 21mm 
· Quintuple nosepiece inward facing with positive click stops
· Infinity long work distance plan Achromatic 10X, 20X, 40X and Infinity long work distance phase-contrast 20X objectives
· Mechanical stage, 180mmX155mm, move range 80mmX50mm 
· N.A. 0.30 Abbe condenser with iris diaphragm, with phase-contrast slide, long work distance 72mm 
· Coaxial coarse and fine focus mechanism with markings. Fine focus sensitivity 0.001mm 
· 6 volt 30 watt halogen illumination 
· Dust cover, power cord
· Fluorescence illumination system: 100W mercury lamphouse and power supply , B/G/UV/V fluorescence filter block(two groups based on your own choice)
· 110V-240V Wide voltage