Yes, a passthrough is an e-cig with a (usb) plug in cord on it. You'll need something to plug it into, either a wall adapter, car adapter, or a computer. Plus you'll need cartomizers.
There's also an eGo passthrough if you like that model better, and those ones you can unplug the cord from the unit and use it as a "wireless" e-cig like normal if you like. But you'll still need something to plug the other end into; a car adapter, a/c (wall) adapter, or a computer. And, of course, some cartomizers or something to use on it.
There's also an eGo passthrough if you like that model better, and those ones you can unplug the cord from the unit and use it as a "wireless" e-cig like normal if you like. But you'll still need something to plug the other end into; a car adapter, a/c (wall) adapter, or a computer. And, of course, some cartomizers or something to use on it.