This is an awesome little vaporizer. I bought this for my wife and she loves it. The only thing negative I will say about it is I've found that you can't use any other coils for this thing. That being said, I highly advise anyone who is going to purchase this to go ahead and get replacement coils as well. The manufacturer sells them for 9.99 for 2. I've found them for as low as 7.99 for 2 at other websites. Just do your homework. Either go this route or just by a tank from you local shop the will work on the box that way you know you can get coils when you need them.