The NEXTORCH© B10 is a perfect light for riding, urban city and around-town commuting. It features patented RSL? technology to provide a unique rectangular spot, delivering a 160 degree wide beam and whole-road lighting for greater visibility to guarantee rider?s comfort and safety. The anti-glare design allows distinguishing the areas to be lit and those to be left dark, illuminating the road without disturbing pedestrians. The B10 has 4 modes, max output up to 420 lumens powered by 4 AA batteries. A low battery indicator keeps you from getting caught in the dark.