3 Brightness & 3 Temperature Adjustable:Soft white glow, press the button to adjust 9 modes light : 0%-100% Brightness dimmable & Light Temperature Ajustable(warm, white, amber), glare-free soft glow helps your avid reader kids enjoy reading without straining their eyes.Long press to ajust light temperature;Short press to ajust light brightness.Flexible & Eye Protection: flexible design, the led lens can be swivelled 90°left and right in horizontal direction, and 45°downward; The 315°flexible holder bends to any angle for your best viewing, no need constantly repositioning the light;1800K color temperature, the upgrade amber book light blocks 99.95% blue light, will not stimulate your photoreceptors or disrupt circadian rhythm while using it in bedroom. Effectively protects your eyes from being damaged by blue light when reading..USB Rechargeable:Easily Charged with built-in USB, directly plug it into your laptop, power bank, adapter, car charger, or USB outlet for recharging, no additional cables needed. 200mA lithium battery, 1.5 hours charging lasts about 8 hours(at brightness setting). No more wasting money on batteries..Compact & Lightweight:Mini size design, 1.37 ounce, small and lightweight, ideal for clipping on a book when nighttime reading; can be completely folded flat and slim, double as a bookmark, portable for reading on airplane, train, or backseat of car when travelling..Product Guarantee:CE, RoHS and UKCA cerification. Each product is well checked and tested before sending out; For any quality issue, please contact us, and your problem will be solved within 24 hours.