Don't expect it to light up the road like the higher powered LEDs, but the Planet Bike 1W Blaze does a pretty decent job at letting you be seen and to spot potholes in your path. Also has a nice strobe mode for catching the attention of drivers, but that mode is far less effective at letting you see obstacles. Pretty small and light, runs on a pair of AA cells, and uses a handlebar clamp that comes off without any need for tools. Runtime is 7 hours on full-power constant beam and 20 hours for the strobe mode.