I use this light pair as my daytime running lights for my road bike. I needed something that was bright enough in the rear as my old unit was weak. It's sad that we even have to use these, but with more distracted drivers it's a must. Overall a good package, easy to install ,easy to recharge. Solid construction, I haven't had a chance to test the water resistance yet, but may soon if December continues to be mild in my region.