Feature: 1. 144pcs LED lamp beads provide luminance from 30,000lx to 40,000lx. Giving intense and focused without shadow illumination for clear observation. 2. Offers an optimum amount of lights to the microscope or camera when additional light sources are required or there was not enough light! Inspection and quality control is no longer a problem to view surface defects and overcome the visibility problems related. 3. It can also used as light source for cameras to focus while hunting viewing in dark places or areas. 4. Adjustable brightness from 0 to 100 percent, easy to control the brightness of the LED light. 5. The well made ring light features long service life up to 100,000 hours. Suitable for the lens diameter of 30mm-63mm. Specification: Specifications: Material: Plastic Color: Black Ouput: 12V DC Power: < 4W Luminance: 3000lx ~ 40000lx (within the distance of 80mm) Connector Size: φ61mm Variable Brightness Range: 0 to 100 percent Effective Distance: 50~250mm Clear Aperture: φ60.5mm Item Weight: 250g / 8.81oz Item Size: 9.3*4.5cm / 3.66*1.77in . Package List: 1 * Ring Light 1 * Power Supply