I bought a portable vaporizer for the first time and portable hookahs called me after making my order to make sure I chose the right device for my needs. Buying online all the time, all I get is a tracking number just like most of you I'm sure. I was a little confused and thankfully I received this call so that I can swap to a different product at the same price. I didn't understand the difference between heating coils up until a rep from the website explained it. Thanks for portable hookahs, I got exactly what I needed.