Lightweight Cycle Light It's an auto light, so it turns on when it gets dark outside. (I don't know if it's useful, though, lol) According to the catalog, it's 250 lumens, but it's very bright. (Looks like 400-600) The battery life is also decent, maybe about two days with normal use. It's a cool red color, and I recommend it for those who are just starting to ride a bicycle. It's new, but it has been opened for photography, so please no claims, no returns. #CycleLight #Lightweight #RoadBike #CrossBike