1. Shadowless lamp is designed especially for stereo microscope. 2. It can offer an optimum amount of lights to the microscope or camera when additional light sources are required or there was not enough light! 3. Easy installation: USB interface. 4. The product is small and portable, easy to carry. 5. Adjustable, uniform without color spots, stable performance. 6. 26 LED bulbs for the brightest and most favorable lighting environment. 7. Diameter: 6.5cm 8. Thickness: 1.2cm 9. It can also used as light source for cameras to focus while hunting viewing in dark places or areas.