Top positive review
Great light at a great price
on 14 February 2013
Blackburn stuff is very good with a good warranty and this light is bright and effective. The rechargeable-by-USB functionality is nice, although a bit fiddly. And you really need to consider the tradeoff between this type of light and the ubiquitous twin-AAA type rear flashing lamp. You'll probably get 40 hours out of a set of AAAs and maybe four hours out of this one. Eventually, the rechargeable battery will die and you will have to replace the light, whereas the AAA-powered one can go on for years (an you can use rechargeable AAAs).
I think these lights best suit people looking for small size and style and who commute to work and can routinely recharge. The clip is strong and will probably also work for running if you have a suitable loop on your clothing. Comes with a silicone stretch strap for seatposts, etc.
Balkburn's packaging is a bit fiddly - mine came in a paper pack and was both glued and zip-tied to it. You basically have to rip it apart to get it out (maybe by design).