I've had one of these for a few months now and the button isn't hitting the switch all the way, so sometimes I'll press down and it won't make the connection. Not really excited about that, although I wasn't expecting longevity with it being a Chinese clone.
I'll pick up a Provari for my VV needs whenever they come out with a new version, otherwise I'll keep to
vaping my Chi_you and use the Seigel from time to time.