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% Brand New Item Type: Microscope Ring Light Material: Plastic + Iron Female Thread: Approx. 27mm / 1.1in Inner Diameter: Approx. 46mm / 1.8in Light Source: LED Light Emitting Diode Maximum Output Power: 3.8W Working Distance: Approx. 40-160mm/1.57-6.3in Maximum Illumination: 30000LX-35000LX Color Temperature: 6500K-7000K Brightness Adjustment Range: 0-100% Adjustable Light Color: White Product Shell Color: Black Product Life:> 30000HRS Ambient Temperature: 20% - 80% Effective Light Distance: Approx. 75mm / 3.0in Effective Light Pathing: Approx. 30mm / 1.2in Weight: Approx. 323g / 11.4oz Power Box Size: Approx. 110x60x30mm / 4.3x2.4x1.2in . Package List: 1 x LED Ring Light1 x LED Adapter1 x Power Line Note: 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.