【Shadow-free Illumination】144 LED lamp beads, Upgraded chip, Provides uniform, high brightness, flare free and focused shadow-free illumination. It is an ideal durable cool light source for microscopes | 【Adjustable Mounting Diameter】Adjustable screws to fix the light onto microsocpe. Max mounting diameter 2.5"(63mm) inside. Suitable for various microscopes and cameras | 【Adjustable Brightness】Compact design with built-in dimmer. 0-100% adjustable brightness. Best Working Distance: 2"-10"(50~250MM) | 【Less Heat】 High Light Efficiency. Low temperature to maximize the user's comfort and operation, even for a long period | 【Reliable Quality】 Durable, long life and Energy-saving. CE Certificate. Power adapter included | 【Wide Applications】1-7/8" (48 mm in diameter) ring adapter included, suits for 99% stereo microscopes. Suitable for Stereo Microscopes, Cameras, Zoom Magnification etc.