The Original Mighty Bright, designed and headquartered in Santa Barbara, CA, produces only the highest quality LED lights, lighted magnifiers, and accessories. The High CRI (color rendering index) LEDs in our products provide better color rendering and consistent light output, making colors appear more vibrant and true. The WonderFlex is the new version of our best-selling XtraFlex2 and provides reliable and evenly distributed warm white light through 2 energy-efficient LEDs. Its warm-temperature LEDs provide clear, warm, consistent light that is easy on the eyes. The flexible silicon neck provides comfort and accommodates a variety of illumination needs. The extra wide and sturdy clip creates a strong grip on multiple surfaces. The dimmable LED lights are rated for 100,000 hours and are adjustable, allowing users to set their own brightness levels. Powered by 3 AAA batteries (included) with a battery life of 30 hours, or by any standard micro USB cable. IDEAL FOR: medium and small sized books, longer trips requiring extended battery life.