Never get caught in the dark again. CatEye's Uno is the perfect light for around-town commuting or for an emergency light for when you stay late at the cafe. Super compact design throws more than 400 candlepower with our OptiCube lens technology. One AA battery and one LED will run up to 60 hrs in flashing mode and up to 15 hrs in constant. Featuring water resistant construction and our FlexTight tool-free mounting bracket that allows you to quickly and easily attach the Uno to virtually any handlebar.