The LED ring light is specially designed for stereo microscope, and is a great companion for different types of microscopes and camera. Features: 144pcs LED lamp beads provide luminance from 30,000lx to 40,000lx. Give intense and concentrated shadow-free illumination for clear observation. Offers an optimal amount of lights to the microscope or camera when additional light sources are needed or there was not enough light! Inspection and quality control are no longer a problem to see surface defects and overcome related visibility problems. It can also be used as a light source for cameras to focus while hunting looking in dark places or areas. Adjustable brightness from 0% to 100%, easy to control the intensity of LED light. The well-made ring light Features long lifespan up to 100,000 hours. Suitable for lens diameter 30mm-63mm. Features: Material: Plastic Color: Black Plug Type: EU Plug Input: 100V-240V AC, 50/60Hz Ouput: 12V DC Power: lt;4W Luminance: 3000lx~40000lx (within 80mm distance) Connector Size: 61mm Dimmable Brightness: 0~100% Effective Distance: 50~250mm Clear Aperture: 60.5mm Item Size: 9.3 x 6.3cm / 3.66 x 2.48in