Eachbid USB Digital Microscope 500X Research Lab Equipment Magnifier HD Color CMOS Sensor. Frame Rate: Max 30f/s under 600 Lus Brightness. Magnification Ratio: 500x Light source: 8 LED (adjustable by control wheel). Operation system: Windows 7/Vista/XP/2000, Mac OS X 10.5 or above(All system are not support 64 bit). System Requirement Pentium Computet with 700M Hz &amp;above(All system are not support 64 bit), 20M HD Space CD ROM Measure Tool: Micro-Measure (It can measure Length and diameters, angle, the perimeter, area, etc)