Description:144 LED BEADS: Made of LED bulbs and plastic shell material, the Led ring light is not easy to damage, and durable in use.SHADOW-FREE DESIGN: Adapting ring shape design, the light is intense and focused shadow-free illumination.ADJUSTABLE BRIGHTNESS: The brightness of the ring lamp is 0-100% adjustable, and 144 Led beads provides high brightness.FUNCTION: The adjustable ring lamp can an optimum amount of lights to the microscope when additional light sources are required.WIDE USAGE: Widely used in stereo microscopes and cameras auxiliary lighting, very practical.Specification:Shell Material: PlasticLamp Color: White, BlackLight Color: WhiteOuter Diameter: About 93mmInner Diameter: About 63mmPlug: US, EULight Source: 144pcs LEDsInput voltage: 100-240V / 50Hz, 60Hz ACOutput voltage and power: 12V DC below 4WBrightness: 30000lx- 40000lx (when working distance is 80mm)Dimming range: 0-100%Working distance: About 50-250mmPackage includes:1pc x LED Ring Light1pc x Power AdapterNote:1. Due to the light and screen difference, the item's color may be slightly different from the pictures.2. Please allow 1-2 cm differences due to manual measurement.