ObjectiveGrouped From Any Two Objectives of 1X,2X,3X and 4X,Working Distance90mm Wide Field Plane-Scope EyepieceWF10X,WF20XOptional Total Magnification10X-20X,or 10X-30X,or 10X-40X,or 20X-30X,or 20X-40X,or 30X-40X Articulated Free Binocular Head,Interpupillary Distance55-75mm45º Inclined,360º Rotatable StageØ75mm Black-white Reversible Stage Plate and Ø75mm Frosted Glass Stage Plate Rack and Pinion Coarse Focusing Mechanism With Slip Clutch and Tension Adjustment IlluminationTop Light-6V/20W Halogen Lamp,Bottom Light-20W Incandescent Lamp Net Weight/Set3kg Package2 Sets/Carton48X30X38cm Gross Weight/Carton9kg