AmScope 40x-1000x Student Biological Compound Microscope + Mechanical Stage 40X-100X-400X-1000X Magnification Settings with Precise Optical Glass Lenses Separate Coarse & Fine Focus and Abbe Condenser w/ Disc Diaphragm Graduated Metal Mechanical Stage and Sturdy Metal Framework Built-in Tungsten Light with GS and CE Approval 5-Year Warranty against Manuafcturing Defects