And why would one choose to use a mechanical over something like ProVari?
3 main reasons:
1) A mechanical has no electronics that can .... and will degrade over time. Anything with integrated circuit boards will eventually die one day. Where as with a mechanical, it has the potential to last forever.
2) A Provari has amp and voltage limitations built into the electronics. A mechanical is only limited by the battery. If you want to vape at higher wattage, the Provari won't beable to.
3) Look and design. Many people prefer the look and design of mechanical over the electronic-looking APVs. Mechanicals tends to be simplistic yet sleek, often times allowing you to customize their look and function.