I emailed portable hookahs hoping to learn more about vaporizers. A gentleman by the name of Phil explained the difference between a conduction and convection vaporizer. I almost made a mistake because I wanted a vaporizer pen and it seems that the Atmos Boss is the only convection vaporizer pen on the market. I am grateful that he explained everything and took the order over the phone. I would recommend this company to everyone, especially newbies.