If you've questions ask away.. The history isn't relevant at this point.
There are two versions utilising slightly different what we refer to as a core.
There is a Teflon version that has an imo unsurpassed ability to give a funky flavourless session.. By this I mean it seems to not degrade to the charred for lack of a better word taste that comes with many vapes I've tried. It's 4 settings let you get where you want.
I can't speak for the glass core. I haven't got one.
On a side note. If you guys remember me speaking about the seemingly strange placement of my returned Tcores visible heater.
That was, I can only fit the larger Teflon ring.. Otherwise it's poking out to much for my liking..
This is said beast..
Remember this is heater, no small ring, ultrafine screen, normal screen, Tring.