Teardown of 4W Duracell branded LED lamp.

This turned into more of a shred-down than a teardown. Getting the lamp apart took so long that I had to stop recording and start again once it was in bits.
Duracell is really just a generic brand now, and I've seen other similar lamps with different brands on them so I'd guess that most of the lamps are coming from a single manufacturer.
The front lens pops off to reveal a dimpled aluminium reflector with an LED assembly consisting of 8 x 1/2W LEDs on an aluminium core PCB screwed into the base of the reflector.
The reflector was glued into the plastic housing using what appears to be a thermal transfer glue and was impossible to remove intact.
The PCB in the base is different from the usual LED lamp circuitry. It uses a chip called an AJM3JA which I could find no data for at all, but functionally it appears to be a mains voltage buck regulator limiting the mains directly using a choke instead of a transformer.