This ring light features 144 LED lamp beads providing luminance from 30,000lx to 40,000lx. It delivers intense and focused illumination without shadow for clear observation. The light offers an optimum amount of light to the microscope or camera when additional light sources are required. It is suitable for inspection and quality control to view surface defects and overcome visibility problems. It can also be used as a light source for cameras to focus while viewing in dark places or areas. Adjustable brightness from 0 to 100 percent allows for easy control. The ring light features a long service life up to 100,000 hours and is suitable for lens diameters of 30mm to 63mm. Specifications: Material: Plastic Color: Black Output: 12V DC Power: < 4W Luminance: 3000lx ~ 40000lx (at a distance of 80mm) Connector Size: 61mm Variable Brightness Range: 0 to 100 percent Effective Distance: 50~250mm Clear Aperture: 60.5mm Item Weight: 250g / 8.81oz Item Size: 9.3*4.5cm / 3.66*1.77in Package List: 1 x Ring Light 1 x Power Supply Condition: New Origin: China