Okay so i got the kit for the bicycle and wanted to ride it around town and give it a shot at night.So, the first time i use it for riding the bicycle the red light fell super easy and fast. I didn’t know it fell and even though no one got it from the people walking around… i was able to find it again.It did absorb the impact of the fall against the street, but still, it should of never fell since iAttached it correctly plus i even tested it by making the back of the bicycle bounce with the back tire. Anyways it just disappointed me by knowing it fell off fast during my rides.So if you purchase this make sure you use tape or double secure it with other accessories that you may find in order for the red back light to not fall off during your rides.Like that it uses alkaline batteries. The front light is bright enough, but I feel that the back red light could have used one more LED. It only has one LED in the center and does not illuminate the outer edges.Love this set. 3rd time buying same set. Great battery operated so no need to keep recharging. I’ve had other bikers ask about this light because it’s so bright. So cheap but so good!Awesome lights. BRIGHT. I use 2. Have bought others; too dim.Excellent bike light. High or low beam is very effective but battery discharges over time of a month, if not used and much be recharged before riding.Fantastic set! Bright lights to make early morning and evening rides easy to handle, while also not being so bright that oncoming drivers are blinded. I highly recommend this light set.I would give this 0 stars if I could. The headlight fell apart on my first bike ride, and the tail right fell apart on my third bike ride. By "fell apart," I mean that on the headlight, the light bulb fell out of the black container part, and for the tail light, the red portion fell out of the black container part -- the disassembling didn't have anything to do with how firmly I had assembled the lights onto my bike, and everything to do with poor construction.The only bright part about this purchase is that the lights are indeed very bright. But all in all, this is utter trash -- do not buy.