Features: This microscope uses CMOS sensor, 2 mega pixels, aviation aluminum alloy and wear-resistant stainless steel material, chrome plated. Focusing distance is from 5mm to infinity, magnification ratio is the maximum about 500X at 5mm, and minimum at infinity which can be used as an ordinary computer cameras. 1-500X magnification continuously adjustable, can get different magnification at different observation distance; the maximum magnification is not less than 200X (using 17inch monitor); it is usually around 1-500 continuous magnifying, and different sizes of display and resolution will have certain influence on magnification. Eight high-end LED lights, adjustable brightness, mini lifting bracket, USB2.0 high-speed transmission interface, anti-jamming magnetic ring. Optical digital magnifying, stepless variable focal length, manual adjustable focusing length at tail. Specifications:Maximum Telescopic Height: 12.3cmMinimum Telescopic Height: 7.2cmBase Size (L*W): 15*8cmResolution: 640*480, 1024*768, 1280*800, 1280*960,1280*1024, 1600*1200Applicable Interface: USB2.0Display Frame Rate:30 frames/second (AVI WMA)Compatibility: Support for IOS system (NOT for tablet computer)Weight: 383g(approx.) Package Includes: 1 x Microscope Set