HT0139B Features 200x magnification with 130MP  Equipped with an USB plug to connect with computers Built-in high bright 8-LED lights General Specs Magnification 200x Pixel 130 mega pixels Light Source 8 LEDs (adjustable) System Requirement Win2000 SP4/XP/Vista/Win7 Supported Languages English， Traditional/Simplified Chinese Dimensions 110 x 30 mm