【Warm Light & Daylight】 -- There are 2 lighting modes for this kids reading book light, 4000K daylight and 3000K warm light, it can block 99.94% blue light, good for eye protection. Press the touching switch on the light head to change the modes.^ 【Brightness Dimmable】 -- The book reading light has 4 upgraded super bright LEDs, 25 Lumens, brightness can be adjusted from 100% to 10%. Hold the touching switch for seconds to adjust the brightness bright or dim.^ 【USB Rechargeable】 -- The built-in USB charging port of the clip book reading light can be charged by any universal USB interface like computer power bank or other USB charging port , the battery out put is 0.15W, 3.7V,200mA.Safe easy and convenient.^ 【Flexible Lighting Head】 -- The book light’s led head can be rotated 90° anticlockwise, 180° clockwise, 45° downwards, the book light body can be rotated 350° .Perfectly meet all your lighting direction needs.^ 【Portable Design Multi Colors】 -- Novelty design,convenient to take out multiple color choices, an ideal gift for kids, adults and bookworms. ^