This kids' book light has 2 lighting modes for your choice, 4000K daylight white and 1550K amber light, it can block 99.94% blue light, good for eye protection. Change the modes by pressing the touch switch on the light head. The reading light has 1 super bright LED, 25 Lumens, brightness can be adjusted from 100% to 50%. The clip light can be charged by any universal USB interface, easy and convenient.