Objective：Grouped From Any Two Objectives of 1X，2X，3X and 4X，Working Distance：1X-55mm，2X-81mm，3X-61mm，4X-57mm
Wide Field Plane-Scope Eyepiece：WF10X，（Optional： WF15X ，WF20X）
Total Magnification：10X-20X，or 10X-30X，or 10X-40X，or or 20X-40X
Articulated Free Binocular Head，Interpupillary Distance：55-75mm，45º Inclined；
Illumination：Top/ Bottom Halogen Light, (LED Lamp option)
WithØ95mm Frosted Glass Stage Plate