yes, not sure if its a flex but its a flexi
I did solder onto a component but didnt seem to work, will check again more carefully this evening.
Will post some pics in the next day
Its a flexible pcb, double sided and kind of rolled into a tube fit into the cavity under the selector ring.
They'll be sending another early in the new year with the 4500K so its ok.
I did very very carefully open the 5000K model to compare exactly, which was a help of course,
and thankfully nothing came apart on the 5000K.
ooOOOooo... fancy! I wanna see the pics too! Flexi PCBs are more resistant to shock since they can flex, but soldering comes apart easily... good to hear that potting is part of the plan; it should make for a heavy duty light.