Very nice, what did you use for the body; it looks like a flashlight...?
Estimated cost? Power Source?
MAybe I'm puting a little too much faith in this, but have you tried the LED test to see if it's more pwoerful than a 5mw red, a 35mw green, etc? ((iirc, red uses red leds, green uses green, etc, and you can compare the ammounts to see which is more powerful, though not accurately by how much...))