Above all, I must say that I would have liked to use it longer ... Once changed the cartomizer, overshadowed the infamous red light, hacked the contactor of the short battery after having kept the Hob original pipe, it was pretty good and as I'm quite conciliatory, I would have put 4 stars ... But then, nothing works! It'll cost me a bit cheaper than a carton of cigarettes, it will have 15 days duration that is three times more than my cigarette cartridge ... So I keep it as a souvenir, to remind me that better to put the price if you want to have something of quality. As my grandfather, I am not rich enough to buy cheap. No hard feelings ...