Features: portable, lightweight and easy to use. 8 Adjustable Built In Illuminat LED Built In Illuminator 8 LED Automatic Light Contrast And Fine Focus Displays The Magnified Image On Computer Screen Can Be Used In Inspection Such As Skin, Hair, Education, Collection, Industrial, And Biological HD Color Sensor, High Speed DSP It has digital measurement software and calibration function. Both Picture And Video Are Supported Specifications Color: Black Length Of Microscope: 11.2cm Diameter: 3.1cm Magnification: 50X - 500X Resolution Ratio: 2.0 Mega Pixels PC Interface: USB 1.1 & USB 2.0 & USB 3.0 Light Source: 8 LED (Adjustable) Focus Range: 15mm-40mm Supportable Operation Systems: Win XP, Vista, Win8 Model: USB Sensor: 0.3m Picture Resolution: up to 2560*1920 Video Resolution: up to 640x480 Item Size:11*2*2cm Package Size:18.5*12*5cm Package Includes: 1 X USB Digital Microscope 1 X Base Accessory 1 X Base 1 X CD