Flexzion Flexible Book Light - Clip On Four LED Reading Lighting Lamp Hands Free For E-Reader Tablet Smartphone Books Music on Bed Or Travel Portable Easy On Battery Powered Four energy-efficient LEDs can lights up your book or e-reader perfectly without hotspots or glare and helps reduce eye strain. Two light settings with a click allows you to choose your preferred brightness level Durable LEDs last 100,000 hours - no replacement necessary. Precisely engineered optical grade lens spreads light evenly Extraordinary battery life with 4 led bulbs - lasts between 10-40 hours depending on your battery quality. Battery powered with 3 AAA Batteries (not included) Comes with a secure padded clamp and fully flexible neck allowing you to position & focus light exactly where you want it. Sturdy clip grips almost anything Small, Lightweight & Portable - ideal as a travel book light and great for the kids & all the family. Perfect for trips & camping