5-55X Zoom binocular stereo microscope

Eyepiece Standard Auxiliary Objective 0.5X Auxiliary Objective 0.7X W.D.105mm W.D.165mm W.D.128mm Mag. FOV. Mag. FOV. Mag. FOV. 10X/20mm 5X 40.0mm 2.5X 80.0mm 3.5X 5.71mm 55X 4.1mm 27..5X 8.2mm 38.5X 5.85mm 15X/15mm 7.5X 26.7mm 3.75X…