The bezel is pressed on, mine wouldn’t come off and by the time it did it was only to use the guts for something else.
OTOH the Wowtac H01 does come off, and it’s a good thing because the tint and the beam profile are the worst! After an emitter swap and a long wait for a suitable replacement optic it’s one of my favorite headlamps!
Here’s where I got the optic and here’s something I posted in another thread: