I've always had problems with the little red blinkie lights(Cateye, PlanetBike, etc.). They either have a neat little clip, that never holds on and I lose the light. Or, the batteries are the little button-type and they are hard to find and expensive. Last year I discovered a new rear light called the FlashBak. I stumbled across it while searching reviews of rear lights online. This one is very different than all of the previous lights I have owned. It uses little alligator clips to attach(to anything), so I cannot lose this one! Plus, it has amber lights. This is very cool. The amber colored lights cut thru fog and darkness like no other. Recently, I attached an additional FlashBak to my XtraCycle. It is so cool on there, it is almost like they made it for the Xtracycle. How about a remote, lighted switch? So, you never have to look down and backwards to see if your rear light is on again. I dig mine.