Overview: The 144LED ring light is designed especially for stereo microscope, and is an excellent companion to various kinds of microscopes and camera. It can offer an optimum amount of lights to the microscope when additional light sources are required. Inspection and quality control is no longer a problem. It can also be used as a source for cameras to focus while hunting in dark places or areas. Features: Made of high quality LED bulbs and plastic material, not easy to damage, durable in use. Intense and focused shadow-free illumination The brightness of 0-100% adjustable, high brightness. It can offer an optimum amount of lights to the microscope when additional light sources are required. Widely used in stereo microscopes and cameras auxiliary lighting, very practical. Specification: Material: Plastic Weight: 254g/9oz Interface size: 64mm Inner diameter: 64mm Outer diameter: 92mm Brightness: more than 18000LUX Dimming: luminance 0~100% Working distance: 40-250mm Power: 4.5W Output: 12V /0.5A LED Light Beads Quantity: 144pcs Power Adapter 12V /0.5A Size: Approx. 12.5 x 9.2 x 3cm/4.9 x 3.6 x 1.2inch Package List: 1 x LED Ring Light Lamp 1 x Power Adapter .