This is a binocular 7X-135X zoom stereo microscope that gives crystal clear sharp images with a zoom ratio of 19:1. It comes with a binocular head with 30mm super widefield, high-eyepoint 10X and 15X eyepieces and a black double-arm heavy-duty boom stand. The 45 degree inclined binocular and high-eyepoint design ensures an easy observation, especially for eyeglass wearers. The rubber eye-guards provide further comfort. The double-arm boom stand allows you to turn the microscope head around three different axes (x, y, and z), that is, you can point the microscope head in to ANY directions desired. This microscope offers high resolution, super widefield of view, 19:1 magnifying zoom range and 4" (100mm) working distance. It is an ideal instrument for research labs, gemologists, engravers, collectors and anyone in semiconductor and/or electronic industry. This stereo zoom microscope is made by the same technicians and on the same production line as optical instruments for Leica, Zeiss, Nikon and Olympus.