Feature:1. Built-in LED lights, high brightness, soft light, can help you observe the structure of objects.2. It is a great light source for human body microscope, monocular video microscope and other optical instruments.3. The brightness of the light is adjustable from 0-100%, less heat, low power consumption, energy saving and environmental protection, and long service life.4. Made of imported plastic shell materials, anti-aging and good flame retardancy.5. It can provide 360 degree uniform illumination to the observed object with high definition.Specification:Condition: 100% NewItem Type: Microscope Ring LightMaterial: Plastic + IronFemale Thread: Approx. 27mm / 1.1inInner Diameter: Approx. 46mm / 1.8inLight Source: LED Light Emitting DiodeMaximum Output Power: 3.8WWorking Distance: Approx. 40-160mm/1.57-6.3inMaximum Illumination: 30000LX-35000LXColor Temperature: 6500K-7000KBrightness Adjustment Range: 0-100% AdjustableLight Color: WhiteProduct Shell Color: BlackProduct Life:> 30000HRSAmbient Temperature: 20% - 80%Effective Light Distance: Approx. 75mm / 3.0inEffective Light Pathing: Approx. 30mm / 1.2inWeight: Approx. 323g / 11.4ozPower Box Size: Approx. 110x60x30mm / 4.3x2.4x1.2in .Package List:1 x LED Ring Light1 x LED Adapter1 x Power LineNote:1.Please allow 0-1 inch error due to manual measurement. Thanks for your understanding.2.Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.