Yes:
http://www.exposurelights.com/product/000098/revo-dynamo-mk1-(new)/
@Emyr started
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
Yes:
http://www.exposurelights.com/product/000098/revo-dynamo-mk1-(new)/