I opened up my lantern and got to the LED-- it was easy. Those 4 screws inside the battery compartment are very long and hold everything together. I took pictures of the LED... and the stupid memory card was corrupted when I tried to transfer them! After I had put it back together!
Overall construction is very clean, looked high quality considering the price. Good contacts and thick wires. The dial turns two paddle contacts, and you can clearly see the contacts for the different levels. There are 6 different resistors on the bottom of varying sizes that provide the different brightnesses-- hence the lack of PWM (which I hate). A simple but elegant design. If these ever have a problem where they start to become intermittent, it may be because the spring paddles need to be bent down to make good contact, or that the contacts need cleaning. Hope this makes sense.
The LED is mounted on a board and metal heatsink.
I can't deal with disassembling it again right now but I want to know if it can be given a warm mod. I'll do it again when I'm in a better mood... unless someone else beats me to the punch.