Franklin Firefly 5 LED Booklight with FlexVue Technology, Black/Silver (DBL-3005) 5 color correcting LED"s from industry leader NICHIA provide both a choice of color temperature and brightness. Single FlexVue light adjustment switch Swiveling head and adjustable light arms for maximum position adjustment The Firefly light provides hours of reading enjoyment plus uses far less energy than an incandescent lamp Requires 1 AAA Battery (included)