Feature:1. The ring LED light has high brightness, long life, low temperature, soft and natural strobe light and long service life.2. The LED light is energy‑saving, with small size, beautiful in appearance and easy to install.3. The brightness of light can be adjusted, and it is an good light source for optical instruments, such as stereo microscopes and monocular video microscopes.4. Because the LED light is a pure DC power supply, there is no strobe light, so it is not easy to cause eye fatigue, and will not cause other harmonic interference.5. 56 LED ring lights are specially designed for stereo microscopes, which is an excellent choice for various microscopes and camerasSpecification:Item Type: LED Ring LightRing Lamp Housing Outer Diameter: Φ: Approx. 93mm / 3.7inRing Lamp Housing Connection (Inner Hole) Size: Φ: Approx. 60mm / 2.4inRing Light Shell Thickness: Approx. 28mm / 1.1inRing Optical Power: 4.5WInput Voltage: 100V-240VOutput Voltage: DC10-12VBrightness Adjustment: 0~100%Working Distance: Approx. 5 ~ 250mm / 0.2 ~ 9.8inScope of Application: Microscope, industrial camera lightingUse brand new imported plastic shell, anti-aging and flame retardantPackage List:1 x LED Ring Light1 x Power Adapter1 x Adjustment Switch