Digital Biological Microscope (hand-held) with LED 1.45mm Din Achromatic Objective:4X,10X,40X(S),100X 2.USE USB 3.With LED Digital Biological ... Microscope (hand-held) with LED1. 45mm DIN Achromatic Objective:4X,10X,40X ... Fine Focusing Adjustable Mechanism:35mm Precision:0.002mm5.Built-in Digital Camera Sysyem,Resoultion:1280(H)*1024(V),1/2'',chip ...