RED & AMBER LIGHT: Blue light is a proven disrupter of melanin production, harming the body's natural sleep cycle. For night owls who love to read & work during the dark hours, This portable reading light has two of the warmest light colors in the spectrum, Amber & Red. BLUE LIGHT BLOCKING: With a temperature of 1600K & 1000K, this warm night LED light blocks up to 99.99% of blue light that reaches your eyes through e-reading devices. The battery on our night book light fully charges with included USB cable in 45 minutes, and runs up to 30 HOURS on one charge! DIM READING NIGHT LIGHT: Unlike other night reading lights, has Adjustable Brightness. Designed with a stepless dimmable button that can be long-pressed to reach the preferred level of brightness between 0-120 lumens. Attaches easily to any device or book with the non-slip clamp. LIGHTWEIGHT & TRAVEL-FRIENDLY: Weighing at just , it's lightweight & great for traveling. The hyper-flexible 360-degree extender 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, candle-like glow. The perfect ambiance to read. FOR READING AT NIGHT: The 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.