Features: 1. High-quality light source with high brightness, anti-static performance, and no flicker. 2. 144 LED lights provide strong, concentrated, shadow-free illumination. 3. Compact design with built-in dimming control, allowing 0-100% brightness adjustment. 4. Specially designed for stereomicroscopes and industrial microscope cameras. 5. Practical microscope accessory with reliable quality for long-term use. Specification: Item Type: LED Ring Light Material: ABS Color: As shown in the picture Application: Used for stereomicroscopes Number of LEDs: 144 Brightness: 30000Lx~40000Lx (0-100% adjustable) Working Distance: 50-250mm / 1.97-9.84in Working Environment Temperature: -40~45℃ Lifespan: 100,000 hours Working Voltage: DC 12V Input Voltage: AC100-240V How to Use: 1. Install the LED ring light onto the industrial microscope objective lens. 2. Tighten the screws to secure the LED ring light (a ring adapter can be added). 3. Connect the power, turn on the switch, and adjust the working brightness. Package List: 1 x LED Ring Light 1 x Ring Adapter 1 x Power Adapter