The VaporGenie is unlike most vaporizers in that it uses an open flame instead of electricity for its heat source:
Being able to use a lighter — torch-style butane is recommended — instead of electricity (either in the form of a battery that needs recharging or an outlet that you can’t take anywhere) with the VaporGenie means that it is a very portable vaporizer. The VaporGenie works by filtering the hot air from the lighter through a special ceramic filter, which is in the top part that screws on, that cools the air to a temperature that is appropriate for vaporizing by mixing it with cooler air. The drawback of the lighter is that if you’re not careful you can burn whatever you are trying to vaporize: there is a little technique required. Another plus of the VaporGenie is that it is one of the cheapest vaporizers, retailing for $49.
Please see the VaporGenie Staff Review for more information.