I ordered two packs (four units and get very soon. The first impression conveyed the feeling that you have purchased a quality product. With use came from three of the four units Liquid from. First, only a little but after a short time more and more. Disassemble, Clean and reassemble did not help. The third device was not taken due to the experiences gemachtan with the other three e-cigarettes in operation and sent back with the three leaking copies. The dealer took the goods back and refunded the purchase amount by saying we would a beginners mistake. What mistakes we could have done or he did not inform us. Since the start-up was carried out in the presence and under the guidance of an experienced steamer, I can not imagine that. He advised us on the debtors and recommended his model. We have for a week now and are very happy with it from the IMIST-V2 I can only advise to the experience -. a huge mess with smeared and bonded fingers and a horrendous Küchenpapier- and Liquid consumption. hands off!!