Features 1、Compatibility: This LED ring light is designed to fit various equipments, including monocular and stereo microscope, with an adaptive diameter of 46mm, providing seamless compatibility 2、31 LED Beads: This microscope light features 31 LED beads that allow for adjustment of lighting brightness, offering a soft and customizable lighting, and the LED has a usage time of over 30000 hours 3、Even and Long Lasting Illumination: This microscope lamp adopts a ring LED light source, it ensures even lighting, stable performance, high brightness, and can work for a long time without overheating 4、Enhanced Effect: This microscope ring light improves dark field effect, making it practical for various stereo microscopes, electron microscopes, and as an auxiliary lighting ring for various applications 5、Versatile Application: This ring light is suitable for use with microscopes, industrial cameras, optical equipment, and visual inspection system, it serves as a versatile lighting solution across multiple fields Specification Item Type: LED Ring Light Light Beads: 31Pcs F5 Round Head LED Beads, Brightness 25000LX (Approx. 20cm / 7.9in distance) Power: USB Interface or Power Adapter Input Voltage: 5V Power Cable Length: Approx. 1.2m / 3.9ft External Polarizing Plate: Outer Diameter: Approx. 63.5mm / 2.5in Inner Diameter: Approx. 38.5mm / 1.5in Internal Polarizing Plate: Approx. 41.5mm / 1.6in Mounting Thread: M48x0.75mm Package List 1 x Microscope Ring Light 1 x Accessory