I had one and sold it. The light didn't appear as bright as advertised -- no brighter than my $20 Planet Bike Superflash when placed side by side and way dimmer than my Dinotte 140. The biggest issue was that I couldn't figure out how to mount it on my bike. It is designed to mount to a seatpost and some seatbags. However, my seatpost is blocked by my seatbag, and the light clip would not fit on the tab on my seatbag.