And know to fix it's particular problem: Mine is out of whack, the light can't be turned on when twist out to get the throw beam and I hear something inside the head comes lose and running. Now it's only on by twisting all the way in + a piece of folded alum. foil at the battery end (which gives the beam all flood). I bought it from ShinningBeam long ago and don't know how long for guarantee. Any idea would be very appreciated.