Specification ： Max output: 5W Best Working Distance: 20mm-160mm(0.8"-6.2") Wire length of the power plug: 47.24"/47in Color temperature: 5500KInside diameter: 58mm Outside diameter: 97mm USB plug, Power input: AC100-AC250V, Adaptive temperature：20 ~ + 40℃ Application : microscope illumination, machine vision system lighting, Eco-photography lighting, Medical photography lighting, instrument lighting,etc. Service : Thank you very much for purchasing our products. If you have any questions after receiving the product, please send us an email immediately. We will have a special after-sales service team to solve the problem for you. We hope that every customer can buy satisfactory goods in our shop. I wish you a happy shopping
