Feature: 1. [Bright LED Microscope Light] Upgraded to 144 LED beads, with transparent cover with focusing function, this light provides bright, focused illumination with even lighting, ensuring no shadows on the observed object. 2. [Adjustable Brightness] The brightness of this LED microscope light is adjustable from 0 to 100%, allowing you to easily adjust the brightness to suit different working environments and magnification levels. 3. [Long USB Cable] This LED microscope lamp has a USB data cable with 59 inch long, can be powered by mobile power supply, convenient and flexible. 4. [Compatible Lens Diameter] Compatible with lens diameters ranging from 23.5 to 64mm, featuring 3 metal screws, can be mounted on most lenses or eyepieces available in the market. 5. [Versatile Usage] Ideal for lathes, microscope LED rings, cameras, binoculars, professional microscopes, suitable for various stereoscopic microscopes. Specification: Item Type: LED Microscope Ring Light Material: ABS, LED Size: Approx. 120 x 100 x 32mm / 4.72 x 3.94 x 1.26in LED Quantity: 144 Voltage: USB 5V Power: 4W Color Temperature: 6500K-7500K Illuminance: 32000-36000LX Compatible Lens Diameter: Approx. 23.5-64mm / 0.93-2.52in Brightness Adjustment: 0-100% USB Data Cable Length: Approx. 150cm / 59in. Package List: 1 x LED Microscope Ring Light