Feature: 1. Optical fiber LED ring light, high color temperature, low noise, low energy consumption, energy saving and environmental protection. 2. With fan cooling system, the heat dissipation performance is good, and the average service life is 25,000 hours. 3. With dimmer, the brightness of the light is adjustable, which is convenient for observing the internal structure of the object. 4. With perfect overheating protection function, the hollow appearance of the beam is eliminated, and there is no infrared and ultraviolet radiation. 5. Made of high-quality iron and stainless steel materials, durable and wear-resistant, can be used for a long time. 6. The output spot is small, suitable for 10mm diameter optical fiber. Specification: Condition: Item Type: Microscope Light Material: Iron + Stainless Steel Fiber Optic: Ring Light Applicable Fiber Optic: Approx. 10mm / 0.4in Color Temperature: 5500K Inner Diameter: Approx. 60mm / 2.4in Fiber Length: Approx. 800mm / 31.5in Use Time: 25000-50000H Beam Illumination: 230000Lx Input Voltage: 85-265V / AC 50 / 60HZ Maximum Power: 35W Transverse Flowing Output: 1000MA (Mzximun) Dimming Mode: Continuous adjustment through dimmer Cooling Method: Fan cooling Working Environment: 20 ?? Storage Environment: 20 ?? Weight: Approx. 2850g / 100.5oz Chassis Size: Approx. 230x90x160mm / 9.1x3.5x6.3in. Package List: 1 x Host1 x Power Line1 x LED Ring Light1 x Hex Wrench1 x Optical Fixing Screw 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.