It is very solidly constructed, but not waterproof (dive capable). At the most, I would say splash proof, similar to Maglite Solitaire. The light it emits is about half as bright as the Photons, which I guess is due to available amps. Finally, the light colour has a very bluish hue to it, more so than any of the other LED lamps I have (these other lamps use 3 batteries to achieve the required voltage instead of a step-up circuit.)