Specifications Eyepiece Wide Field Plane-Scope Eyepiece: WF10X Objective 45mm Achromatic Viewing Head Dual Observation Head, 45 degree Inclined, 360 degree Rota table Stage Double Layers Mechanical Diaphragm 2-30mm Iris Diaphragm And Filter Condenser ABBE Condenser: N. A. 1. 25 Focusing Coaxial Coarse And Fine Focusing Adjustable Mechanism: 20mm Illumination Built-in Adjustable Brightness Halogen Lamp 6V / 20W Net Weight / Set 3. 7kg