The NuFlex provides bright, warm white light via three energy-efficient LEDs for illumination up to 35 lumens. The warm-temperature LEDs provide clear, consistent light that is easy on the eyes. The NuFlex's precision engineered optical grade lens is specifically designed to distribute a wide field of consistent lighting with no hard edges. The precision lens works in conjunction with our High CRI LEDs (High Color Rendering Index LEDs) to provide better color rendering and even light output. Colors appear more vibrant and true, and with minimal optical distortion. The NuFlex has three dimmable and adjustable LEDs rated for 100,000 hours and is powered by three AAA batteries (included) with a typical battery life of 16 hours, or by any standard micro USB cable (Mighty Bright Micro USB cable sold separately).