That's the UltraOK a bunch of us jumped on last Fall - see original thread here. There is an Aleto version too with a full review. It's strength is in being able to run 4AAA's for non-flashaholics. Beware it has a hollow pill; the emitter star only sits on a small ledge and it need popped up and thermal compound placed around that ledge - or better yet plug the hole with something. It's also known as sort of an HD2010 look-a-like (not really a clone). $15.99 is a good price. I have two and believe I paid closer to $20 each.
-Garry