As far as I can tell, there isn't much you can do with it other than change the coil. Assuming I'm looking at the right pictures, there is only one button, one usb port, and no display. That indicates to me that everything that can be done has to be done with the one button. In the old days, mods like this had 5 clicks to turn on/off, and 3 clicks to change mode/settings, and the really "advanced" versions had a dial you could twist to change power levels. With only a single button, no dial, and no display, I'm guessing this mod will auto adjust up to as much as 50watts based on the resistance of the coil you install. I think it should be pretty straight forward and just work.
That is all pure speculation however, as there is a severe lack of available information.
HTH!