RED YELLOW LIGHT: Blue light is a proven disruptor of melanin production, which interferes with the body's natural sleep cycle. For night owls who love to read and work during the dark hours, this portable reading lamp has two of the warmest light colors in the spectrum, yellow and red. BLUE LIGHT BLOCKING: With a temperature of 1600K-1000K, this warm LED night light blocks up to 99.99% of the blue light reaching your eyes via e-readers. The battery in our night book lamp fully charges with the included USB cable in 45 minutes and lasts up to 30 HOURS on a single charge! DIMMABLE READING NIGHT LIGHT: Unlike other night reading lamps, it has 100% adjustable brightness. Designed with a stepless dimmable button that can be long-pressed to achieve the desired brightness between 0-120 lumens. Easily attaches to any device or book with the non-slip clip. LIGHTWEIGHT AND TRAVEL-FRIENDLY: Weighing [weight missing in original text], it is lightweight and perfect for travel. The hyper-flexible 360-degree extender allows you to easily maneuver the warm night light to any angle. The LEDs are enclosed in a light-diffusing shell that emits a soft, vibrant light. The perfect ambiance for reading. FOR NIGHT READING: Makes the perfect gift for the bookworm 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.