Supernova Generator Light System
If you’re a self-reliant type and really want to be prepared, this is the light system to have.
There is no battery involved. You generate your own power when you spin the efficient dynamo hub. The powerful LED headlight gives you over 300 Lumens (that’s bright!) and a built-in capacitor will keep the lights on for five minutes after you stop moving (handy for stopping at intersections).
Really want to be prepared for a zombie apocalypse? Get the optional USB port stem-cap, and you can recharge your phone or iPod while you pedal.