It is easy to put on spokes and great way to ride in the dark and be seen!I love these lights! I’m going to look so BA riding my bike back from bar hopping this fall. Bring on the time change…. I’m readyKule to look at when u are high.Pretty cool, wish I could set it to one specific pattern or one entire color. Whatever, good enough.I cant begin to explain the nightmare its been to find anything for 16x1.75 wheels. I have tried pretty much every single led setup for these wheels and I still haven't found any that fit properly. I need a set that's is 120mm long with a taper at the top of the clear case to fit in between spokes. Longer plastic fasteners would make instalation much easier. I would love it if I could chose only 1 pattern to be displayed at all times vs constantly changing patterns. Programmable would be even more amazing. The rechargable batteries was a nice touch. The AA and AAA batteries were heavy and felt like they were warping my wheels. I out 2 units per wheel to balance them out a bit. Overall this one and the 14 led version are the only two that kind of work on my wheels. If you guys make a 120mm version please let me know so I can buy them. ThanksI think the best feature of these lights is the recharging batteries, USB or get a charger to connect to the wall. The battery last for days or a couple of weeks if the bike is not in used all the time. Definitely I will buy these lights again for my husband and I. These lights are the kids size and were a little difficult to install on a 14 inch bike, but it changed when I switched them to a 20 inch bike. ?Pros: Super easy to install. Battery last long enough for 10 20' rides so far. The pattern does come out easy on my 20inches kid bike.Cons: A bit on a shorter side with only 7 LEDs per side its effect is not too impressive. 10 to 12 LEDs would be much better i wouldn't mind to pay more.The only Lithium battery wheel spook light so we don't have much choice here. Also we don't bike when its rainning so we don't know how good is it waterproof claim.DESPUES DE CONECTAR EL PRODUCTO PARA CARGARLO ESTE NUNCA PRENDIO Y CONECTE MAS DE 12 HORAS CADA UNA DE LAS CAJAS DE LED. EN DONDE SE CONECTA SE VE UNA MANCHA AMARILLA COMO QUE ESTUVIERA REGADO EL LIQUIDO DE LAS PILAS O EL CARGADOR O ESTUVIERA OXIDADO, LA VERDAD ES LA PRIMERA VEZ QUE ME PASA ESTO CON AMAZON. SIEMPRE HABIA ESTADO TODO BIEN. NO TENGO LA CAJA Y POR DESGRACIA ABRI EL PRODUCTO MAS DE UN MES DESPUES DE PEDIRLO Y NO CREO QUE ME DEVUELVAN NADA PERO OJALA NADIE LO PIDA, NO TIENE CALIDAD Y NO FUNCIONA.