The lights are adequately bright, but nothing too special. The great thing about this set is the price to quality ratio, and above all the universal fitting of the bracket. One of my bikes is an older Schwinn steely with a very narrow seat post. Every other tail light I have used in the past is too large to fit onto my seat post, leaving me having to slap together a zip-tied mess. This one fit perfectly, which is a HUGE plus for anyone using a similar frame.