Specification: Viewing Head Sliding Binocular Head, Inclined at 45°360°Rotatable Eyepiece Wide Field Eyepiece WF10X,P16X Objective Achromatic DIN 4X,10X,40X(S),100X(S,Oil) Stage Double Layers Mechanical Stage140X140mm/75X75mm Condenser Abbe NA1.25 with Iris Diaphram & Filter Illumination Built-in Illumination,Halogen Lamp 110V or 220V/6V20W Plan-concave Mirror