Trouble in paradise...
Unfortunately, I must report that the E02 stopped working for me after I dropped it from 35 inches (0.89 meters). I had it stuck to the side of a barbeque grill (using the magnet), illuminating a cooler on the ground next to the grill. I caught it with my arm on the way past, it fell down onto the wood deck, and stopped working.
I will contact Manker and see how they wish to handle the situation -- and update this post accordingly.
With the E02 out of commission, I decided to see what was accessible -- in case the problem could be identified easily.
The reflector is held in place by a small bezel ring. Pressing against my thumb, I could easily unscrew it. The rest of the circuit, board, and etc were accessible by unthreading a small gold-colored retaining ring around the positive post.
Here's what it looks like when deconstructed-
A close-up pic of the circuitry-
There's a sizeable copper heatsink behind the circuitry. A small amount of heatsink compound is present to transfer the heat to the outer body.
While the E02 failed in an unexpected way - a bad thing - I will say that the build quality otherwise seems to be good.