A little bad luck, one month after the battery not charging ??? J, had to buy 3 -2 fonctione for the moment very well. C good product, it fonctione-)) j; ais decrease de50cigarettes on 25. My daughter decrease by 30 of 10 cigarettes a day and my son still seulm. 5 per day. Really efficasse the little blame anything. Should card only to watch the product quon achette. C, d is better, that investire, ellque cents more-)) P.Krier