Mighty Bright-DoubleFlex Two LED Book Light. Enjoy two energy- efficient LED's per gooseneck that cast bright white light. Durable LED's last 100,000 hours. No replacement necessary! Two switches control lighting level. The precisely engineered optical grade lens spreads light evenly and has a sturdy clip that grips almost anything or can be free standing. Has two flexible necks. Powered by three AAA batteries. This package contains one 10x3x1-1/2 inch DoubleFlex Two LED Book Light and three AAA batteries. Comes in a variety of colors. Each sold separately. Imported.