XIANQI [Eye-protecting amber glow] 1800K color temperature, the upgraded amber book light blocks 99.95% of blue light, and it will not stimulate the photoreceptors or disturb the circadian rhythm when used in the bedroom; effectively protect your eyes from blue light damage when reading. 【USB Charging】Built-in USB for easy charging, plug directly into your laptop, power bank, adapter, car charger or USB socket for charging, no extra cables required; 200mA lithium battery, 1.5 hours charge lasts about 8 hours (brightness setting) ; No more wasting money on batteries. 【3 Brightness Levels】30%, 60%, 100% brightness optional, choose the perfect brightness, keep your eyes comfortable, enjoy reading in bed without disturbing your roommate; short press to switch brightness, long press to close the book light; brightness memory function, will keep the previously selected brightness level. 【Flexible Reading Light】Can stand alone or clip on a book; LED lens rotates 90° clockwise, 90° clockwise, 45° down; 315° flexible stand allows you to focus the light exactly where you want . 【Compact and Lightweight】Mini size design, 1.37 oz, small and light, perfect for gift giving, clip on a book lamp, read in bed; can be fully folded flat and slim, double as bookmark, travel in the back seat of plane, train or car Easy to read. Specification Lumen: 16LM Lithium battery: 3.7V 200mAh Color temperature: 1800K Power: 1W Charging time: 1.5 hours Working hours: up to 8 hours 10.5cm*4.6cm*1.3cm pink