A 34.4140 Specification Color of Body White, Black Magnification 25 X -400X Focus Range 15mm ~ 40mm Lens Microscope Lens , M12 Resolution 2.0M ( Default 0.3M ) Still ImageCapture Resolution 1600*1200, 1280*960, 640*480, 480*320, 320*240 Frame Rate 30 f/s Under 600 Lux Brightness Digital Zoom 3X Sequence Mode Image Sensor Color CMOS Sensor Controller High Speed DSP( Driver Free available ) Power Supply USB Port ( 5V DC ) Interface USB 2.0 & USB 1.1 Competiable Illumination White Light 8pcs LED Brightness Control: Manual adjustment , Auto W/B by software Measure Tool Micro-Measure(It can measure Length and diameters, angle, the perimeter, area, etc) Snap Shot Software and Hardware Driver Language English,Chinese Operation System Windows XP ,Vista,Windows 7, 32 bit and 64 bit System Requirement Pentium Computer with 700M Hz & Above , 20M HD Space CD ROM Driver, 64MB RAM , Direct X VGA Card Accesseries 1.5M USB cable, CD disk,Metal Fix Stand, color box, calibration ruler, user manual