This sounds like the J5 Tactical V1 Pro. It's a pretty neat little flashlight for cheap. I have one and have used it for a while. It works pretty good. The 1 AA battery is really nice too. I tested how long it can run and found that 4 hours on high mode is the typical life of a Duracell AA.
I don't own a BK2, but everything I've read and everyone I've talked to that does really like the knife. It's got a 0.25 inch thick blade of 1095 Cro-Van steel that is powder coated. This is pretty much why its nearly indestructible.
The advice I've gotten is if you plan on doing a lot of wood...