Bezel can just be unscrewed with the friction of the fingertips, not waterproof!
Looks like a standard 20mm Lens
After unscrewing a aluminum ring the inside just pops out the front.
Not much meat for the heat, but a copper DTP-MCPCB, didn’t expect that.
Charging circuit and back-LED
Won’t take it apart further than this.
The LED on the back is so dim on the outside, some lightened up switches are much brighter. Don’t know what this is actually for, maybe they reused an IC from a light with a COB or something?
Maybe as a ultra-giga-low-powered night light?
Changed the LED for the LH351D that I pulled out the Sofirn HS22 earlier this day.
For the money it’s an OK system, ready to go, just won’t last too long. Not something for a night walk or so, more for people that use a flashlight every 3 months for 5 Minutes.