45mm DIN Achromatic Objective: 4X,10X,40X(S),100X(S) Wide Field Plane-Scope Eyepiece: WF10X;Articulated Free Binocular Head, Intepupillary Distance  55-75mm 30ºInclined360º rotatable .Built-in Digital Camera System, Resolution:128 *1024(V),1/2Chip, USB2.0 with Micro-image Process Software   Nosepiece: Backward Quadruple Nosepiece Double  Layers Mechanical Stage:125X130mm,Moving Range X-Y: 60X30mm   Ø2-Ø30mm Iris Diaphragm And Ø32 Filter with ABBEondenser:N.A.1.25 Coaxial Coarse And Fine Focusing Adjustable Mechansim: 20mm,   Precision:0.01mm

 Built-in Adjustable Brightness Halogen Lamp 6V/20W (or Incandescent, or Fluorescent , or LED)