Lights

B&M make excellent light, as they should being German.

http://www.urbandictionary.com/define.php?term=stvzo

"German bicycle lighting standard written by non-cyclists designed to force cyclists to subject themselves to increased danger by requiring the use of sub-optimal bicycle lighting systems."

A friend of mine was stopped in Leipzig and given an on-the-spot fine. The reason? Her front light was not heavy enough.