Mechanical vaporizers do not require any electricity or batteries. Just purely mechanical. The only thing you need is a heat source, preferably a JET lighter. And you're good to go. The most famous brand is certainly DynaVap with its unique VapCaps in different metal types and colors. The Vapman is more of a noble luxury model, handcrafted in Switzerland, with a rather unusual design. Both brands are of course available from us, and much more besides.