Fusion 3600 Lumen Light

I was excited to try this light and I really wanted to like it.Pros:- It's like holding a miniature sun in your hand. Unfocused, it turns night into day. Focused, I can illuminate trees three hundred yards away.- Vented lens. No dealing with an unequalized focus adjustment at depth.- 26650 & AAA compatibility- Smooth magnetic switch- Nice rubberized coatingCons:These are all subjective cons, because there were no actual flaws with the light.- There is some slop in the lens to flashlight tube fitment. When fully extended the lens wobbles perpendicularly to the axis of the flashlight tube.- It's pretty big. Again this is a purely subjective con, but it was too big for me.- The tube's inner diameter is at least 1/4" larger than the diameter of a 26650 battery, presumably to accommodate the AAA battery sled included with the kit. This allows 26650 batteries to rattle. Functionally, it seems to make no difference but it bothered me. Make a smaller AAA sled so that the flashlight tube could be smaller.- The lens housing is too much wider than the flashlight body to gracefully deploy & stow. Clipped to my right shoulder d-ring and secured with bicycle inner tube, it stayed put. However, removing it from the inner tube or replacing it with one hand was nigh-impossible because of how massive the lens hood is.it's built like a tank, but it just wasn't for me. In the end, I decided to return the light before diving with it, and I was sad to do so. If you're accustomed to diving with big chunky lights, I think you really might like this one.