Oh yeah... the guts...
It's been rebuilt with a little more reinforcement for durability. Mine doesn't have the magnet door, but I carry a Leatherman, so on the off chance that I have to swap a battery, I carry an extra one of those, too. I get between 12-16hrs of steady, all-day, average vaping (3-5ml) tho. Generally, I unplug it in the am and plug it in at night. Fill it once in the morning before leaving with DIY nicquid. I'm not a flavor-changer.