Sorry for the ignorance, but I'm not certain what "type" of equipment I should be reading about... I am interested in something that will mimic the "draw" of a cigarette as closely as possible, while providing a decent hit and cloud. I don't really want to get into building anything for myself, so am looking to purchase a battery unit that can control air and voltage, along with a clear tank I can simply refill. I'm not really asking for specific recommendations, but I don't know what "type" of equipment I should be considering. Is what I've described called a "mod", a "mech", or something else? If anyone could tell me the type or class of equipment I've described, it would be much appreciated! Sorry to be a pain.