I bought two of these lights last year! They look amazing, until I got in the water with them! First it’s a toss up whether they will turn on or not in the water! Then one started to be really finicky only turning on when one of the batteries was in it when both batteries would work in the other! Now, I was checking them for my third liveaboard trip since I bought them and one of them is so so dead! Battery fine flashlight deceased! I would love to get in touch with the manufacturer but I don’t know who they are! I love it and would really love them to work but they are too expensive for them being so short lived and unreliable