I am still new to the world of vaping....I do wish I had tried this a lot sooner. I have not had or craved a cigarette since the day I got my e-cig which is totally awesome. Anyway, I am just wondering what are the benefits of a passthrough? Other than seeing pictures of them I have no idea what it even is. Is it just another e-cig that you plug into a USB port instead of just using the typical battery? Do you all like them better?