Harness the environmental and economic advantages of a rechargeable light. The WonderFlex® was originally created to improve upon our classic XtraFlex2® and now we've made the WonderFlex® even better by making it rechargeable. The WonderFlex® Rechargeable all-purpose book light provides 20 lumens of warm white light via two energy-efficient LEDs. It provides clear, consistent light that is easy on the eyes. • Rechargeable (charges fully in 3 hours, when indicator light turns green) • 3 brightness levels via step-down dimming • Battery life: 10 hours on high, 45 hours on low • Precisely engineered optical grade lens spreads light evenly • Two energy efficient LEDs cast bright warm light • Constructed of flexible and durable silicone and ABS plastic • 8" Flexible neck • Charges in 3 hours with included micro USB cable Its precision engineered optical grade lenses are specifically designed to distribute a wide field of consistent lighting with no hard edges. The precision lenses work in conjunction with 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. You can also quickly adjust the light output to three different levels by clicking the button on the light head. With its durable, soft-touch silicone gooseneck and strong-grip clip, you'll find unexpected uses for this versatile light. The dimmable LEDs are rated for 100,000 hours and the battery can be charged in 3 hours by the included micro USB cable or by any standard micro USB cable and usb-compatible charging block (charging block not included). IDEAL FOR: medium and paperback-sized books, longer trips requiring extended battery life, or anywhere you need focused, warm, bright light. 20 LUMENS 3000K