This is going to be the holy grail for vapers. No more carrying a bottle around for dripping. Just push the button. It's also variable voltage with the new tech controller in it so the two 14500 batteries inside should last for more than 24hrs. For me I would guess considerably more. Oh and I won't have to change batteries because there's also an on-board charger that lets me plug it in and continue to vape with it like a passthrough while the batteries are charging. I can use my cartos or atty's on it so like I said the holy grail. I for one can't wait for the VVPROV and from what I've been reading it won't be long now. You ought to check them out at Notcig. I know I'll be first to get one as I was one of the fifty or so testers that tried it and I loved it.