45mm DIN Achromatic Objective: 4X,10X,40X(S),100X(S,Oil); Wide Field Plane-Scope Eyepiece: WF10X,Wf16X; Articulated Free Binocular Head, Intepupillary Distance:55-75mm, 30ºInclined, 360ºRotatable Built-in Digital Camera System, Resolution:1280(H) *1024(V),1/2Chip, USB2.0 with Micro-image Process Software Nosepiece: Forward Quadruple Nosepiece                     Double  Layers Mechanical Stage:140X155mm,Moving Range X-Y: 70X50mm Ø2-Ø30mm Iris Diaphragm And Ø32 Filter with ABBE Condenser:N.A. 1.25 Coaxial Coarse And Fine Focusing Adjustable Mechansim: 30mm,   Precision:0.002mm Built-in Adjustable Brightness Halogen Lamp 6V/20W and Kohlar Illumination System