A typical week has me finishing a century ride, and, coming home a few miles after a group ride in the dark. Most of the time, most of my bikes have lights mounted on them. Including my weight weenie bikes.

I was bored a couple of days ago, so I bought one of these.

$4.16 really !!

FJQXZ Red Light Water Resistant LED Warning Tail Lamp for Bicycle - Blue - Free Shipping - DealExtreme

It's been running 8 hours so far with no noticeable change in brightness.i rode with it for maybe four hours. It's not quite as bright as my 1 watt Radbot 1000. It's close to the same as my Planet bike Superflash .5 watt. It's noticeably brighter than my brand new Planet Bike Superflash mini USB, which is not bad. It uses two cr2032 batteries, I can get them on line for less than a dollar. The rubber strap may break, but if it does not damage the light I will put velcro on it. If it smashes to the concrete, I will just pull another one from bag and put it on. They say waterproof, I have not used it in the rain yet. I ordered a white one for the front.

Four friggin' dollars, yeah .............