DescriptionRED YELLOW LIGHT: Blue light is a documented disruptor of melatonin production, which harms the body's natural sleep cycle. For night owls who love to read and work in the dark hours, this portable reading light has two of the warmest light colors in the spectrum, Yellow Red. BLUE LIGHT BLOCKING: With a temperature of 1600K 1000K, this warm night LED light blocks up to 99.99% of blue light from reaching your eyes through e-reading devices. The battery of our night book lamp fully charges with the included USB cable in 45 minutes, and lasts up to 30 HOURS on a single charge! DIM READING NIGHT LIGHT: Unlike other night reading lights, it has 100% adjustable brightness. Designed with a stepless dimmable button that can be long-pressed to reach the desired brightness level between 0-120 lumens. Easily attaches to any device or book with the non-slip clip. LIGHTWEIGHT TRAVEL-FRIENDLY: Weighs only , is lightweight great for travel. The hyper-flexible 360-degree extension allows you to easily maneuver the warm night light at any angle. The LEDs are encased in a glow-diffusing shell that emits a soft, light-like glow. The perfect atmosphere for reading. FOR NIGHT READING: These are the perfect gifts for the bookworms in your life! With its lightweight portable design, long-lasting battery, and two ultra-rich warm LED colors, this is an ideal choice for people who read or work at night.