Our light boxes are built with Solid State LED technology, which means you no longer have to utilize fluorescent tube models which can run hot and flicker. The Copic LED Lightbox provides instant on and off with no light flicker, as well as a nice cool work surface. The result is an ultrathin and portable unit that fits into a portfolio or briefcase. The smooth, rounded edges eliminate creases in your work materials and provide comfort for your hands and wrists. With zero bulbs to be broken, the Copic Master is designed to withstand the rigors of everyday use and yield a durable, long lasting life.