BR, that is a puresmoker 5v pt, i have a indulgence pt as well but it feel like its giving a little higher then 3.7 but not much but the silver pt feels like 5v like my other mods at 5v. and i connect them to a usb wllplug 5v 2000mah
my e2's run way to hot in it for some reason, havent tried any 3.1's on it though.
The indulgence is the one I remember seeing. I thought it would be straight through without reducing the voltage. Don't understand why it doesn't put out as much as the battery. Guess I'll have to check it out further. I have a home made one that I use from a variable power supply, but getting tired of using that PT contraption.