Knog lights - kill them in the wet

+1 for this baby, it's a 1W star LED at the top and 3 standard ultra bright ones underneath. Flashes and standard, lasts as long as you like...

+1 for the 'superflash' it's the brightest rear I've ever used and doesn't drink the batteries.

Only problems with mine is it hates water.

Even a slight humidity content in the air is enough for it to throw a hissy fit.