I don't have one personally, but its one of those "How long is a piece of string" questions unfortunately.
It depends a lot on how you use it. i.e. what battery or
mod is it on and what volts/watts do you run it at ? - What sort of liquid do you use (Thick, thin, clear, colored) and many other variables.. I find proper maintenance of your wicks,
coils and seals will increase the lifespan of anything you use to a degree
Hopefully someone who owns one will come along shortly and give you the sort of answer your looking for
