Feature: 1. Adjustable Brightness: This microscope LED spot light provides high brightness and small luminous area, and brightness is adjustable. 2. Heat Dissipation: This microscope LED spot light adopts unique structure design for good heat dissipation and stable performance. 3. Dual Use: This microscope LED spot light can be used alone or work with a microscope with coaxial function. 4. Highly Durable: This microscope LED spot light features high brightness and small luminous area, better use experience. 5. Different Size: We provide LED spot light of different specification for you to choose, which is suitable for devices of different size. Specification: Item Type: Microscope Coaxial Light Material: Aluminium Alloy, ABS Purpose: Microscope Light Source Light Source: LED Light Emitting Diode Maximum Output Power: 0-5W Working Distance: Approx. 20-60mm / 0.79-2.36in Maximum Illumination: 240LUX Color Temperature: 3000K to 6000K Dimming Range: 0-100% Adjustable Product Life: >30000HRS Effective Optical Distance: Approx. 15mm / 0.59in Effective Lightpath: Approx. 10mm / 0.39in Product Type: Split Type Diameter of Through Hole: Approx. Φ6mm / 0.24in. Package List: 1 x Microscope Coaxial Light1 x Controller1 x Plug Note: The input voltage of the light and the output voltage of the power controller are both 5V, which must be matched with the power supply. Otherwise, the light source will be burned out.