It has a very basic screen with five bars to display battery life and tell you what voltage you are running at. There are five settings in 0.3v increments between 3.3 and 4.5v. As far as battery life, at a rough guess I’d say it’s at least as good as the mod 101 when I was using it in 18350 mode. But I find it more convenient as it’s an integrated battery and I can just plug it in rather than bothering with chargers. It seems pretty solid and well built, but is also very light, about the same weight as the zeltu m, I would say. Which is a big advantage for me as well.
Are you thinking about a mech 18350 tube, or something like the mod 101?