PZ01 200X Handheld USB Digital Microscope Endoscope Loupe Otoscope Magnifier with LED & Metal Stand Best Deal! This listing includes a microscope and a metal universal stand, which is worth more than 15 USD. Magnification: 1 ~ 200 times (combined optical and digital zoom), continuos zoom capability. Focal distance from 0 cm to 1cm. The magnification factor increase as the focal distance decrease, and vice versa. It could be used as a web camera if the focal distance is 0.3 m or more. Powered by 2.0 USB. 0.3M pixel CMOS sensor, interpolated to 2MP definition. Adjustable LED light.Auto white balance and auto brightness balance function. Compatible with Windows 8/7/Vista/XP SP2/2000 32/64 bit, Mac OS _ 10.5 or above, Linux. For Mac, please simply use Photo Booth or FaceTime to open the device, no driver or additional software needed. Measurement function is only available on Windows based operating systems. Measurement function includes length, arc, angle, radius and etc. Snap shot and video recording functions. Photo format: JPEG. Photo Capture Resolution: 640 X 480, 320 X 240. Video Capture Resolution: 320 X 240. Video format: WMV for Windows systems, AVI for Mac OS. Maximum display speed 30f/s.