Our goal is customer satisfaction! If you have any problems with our products, please feel free to contact us. Thank you! Achromatic Objectives 4X,10X,40X(S),100X(S,Oil) Eyepiece Wide Field Eyepiece: WF10X (WF16X Optional) Viewing head Compensation Free Binocular Head Inclined at 30° Stage Double Layer Mechanical Stage Size 125X115mm Focusing Coaxial Coarse and Fine Adjustment,Focusing Range 1.18 1 in, focusing Interval 0 mm Condenser Abbe NA=1.25 with lris Diaphragm&Filter IIIumination LED Lamp