They are, as many say, cheaply made and flimsy. I was able to pull the lens out with little effort (it started as soon as I took it out of the box), the water resistance wasn't great, and the air-cooled find is plastic and offered limited or no cooling compared to natural ones. I wouldn't trust it for off-road or other more demanding uses. All in all I bought them knowing this was probably the case and with the intention of taking them apart for use in a project I'm developing and only needed the LED board. and the lens and both worked great for my purposes.
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