Description:  60 LED Adjustable Ring Light Illuminator Lamp For STEREO ZOOM Microscope  Specifications:   Intense and focused shadow-free illumination. Brightness Adjustable. Light color: White Max output: 4.5W Best Working Distance: 50mm-150mm(2"-6") Brightness of each LED: MAX 3500 mcd   color temperature: 5500K Inside diameter: 30mm-60mm Outside diameter: 94mm Power input: AC100-AC240V、 50-60HZ Wire length between power adatper and lamp ring: 145cm\/57in Wire length of the power plug: 150cm\/59in   Packge  Included:    1 x 60-LED Lamp Ring 1 x Power adapter  Details pictures: