Small and powerful, Sigma's Quadro X is ready to light the way! This little light packs a big punch with its very bright 1/2 watt LED so you can be seen from up to one mile away. With up to 40 hours of run time on 3 AAA batteries, it's easy to appreciate the low weight and small size that makes the Quadro X very portable. And, of course, it's installed without tools to your handlebar or helmet, and can be used as a small flashlight!