Puresmoker's web site says the prodigy vapes at 4.5 - 5.25 volts. I recall someone on this site saying that it had multiple voltage settings, namely, 3.7 v, 5 v, and 6v. Looks like a nice piece, but I would like to know if I can switch between 3.7 v and 5 v? It also uses (2) RCR123a batteries. It is VERY appealing that these are 'protected' batteries, but this would have to make the housing a pretty big piece of equipment. Anyone find it combersome vs the protege???? Thanks in advance of your answer.