The Digital Microscope is a fully functional magnification device which can easily be operated by plugging directly into your computer enabling you to magnify objects from 50x up to 500x. Enhancedwith adjustable light control wheel with 8 white LED lights, the USB Microscope can capture quality images and videos. Allows you to capture, manipulate, annotate and measure. This digital microscope requires no batteries, receiving its power directly from the computer's USB power. The USB Microscope's compact and innovative design, as well as its easy accessibility option make it a perfect candidate for any scientific enthusiastic, classroom projects or intricate measurements. Specifications: Magnification Ratio 50x - 500x (Adjustable Zoom & Adjustable Magnification) Light Source 8 LED White Lights (Adjustable Light Intensity) PC Interface Mini USB 2.0 Power Supply 5V DC from USB Port Video Capture Resolution 640X480 (VGA) Focus Range 15 - 40mm Size 112mm(L) X 33mm(R) Compatibility Windows PC... show more