USB-powered handheld digital microscope . It has 8 built-in LED lights on camera head to illuminate the inspection area,the LED lights' brightness is adjustable (a wheel on the cable). Automatic Light Contrast And Fine Focus,displays The Magnified Image On Computer Screen HD Color CMOS Sensor, High Speed DSP,Contains Digital Measurement Software And Calibration Contains An Adjustable Metal Stand The microscope is made up of high-quality IC and electronic components, with clear image quality, low power consumption, high-resolution