1600X Binocular Digital Microscope 1.45mm Din Achromatic Objective:4X,10X,40X(S),100X 2.Digital USB 3.LED 4.Reasonab Pric 1600X Binocular Digital Microscope1 ... Fine Focusing Adjustable Mechanism:20mm Precision:0.002mm5.Built-in Digital Camera Sysyem,Resoultion:1280(H)*1024(V),1/2'',chip ... Brightness Halogen Lamp 6V/20w(or Incandescent, or fluorescent,or LED)