Several years ago I got one of these from my daughter for a birthday present. Really bright, tight beam, small light, easy to carry, great for poking around during daylight dives.....but after a year or so it flooded. Had a leak in the light head, not the double orings. I was living in the states then and sent it to UK in California and they replaced it, with apologies, immediately. That was about 2 1/2 years ago. On the last dive trip at Christmas, after 150 or so dives, the new one did the same thing. I sent a note to UK in Germany (living in Europe now) and they responded immediately noting they were sorry this happened again and that because of the problems they had redesigned the light head.........and that they would immediately send me a new one of the new design! It seems there is a lifetime warranty in the states and a 10 year warranty everywhere else according to their website. I really love the light so hopefully the new design will fix the seemingly known flooding problem. When it works, I think it's one of the best small packet lights around, pound for pound.