One thing that differentiates quartz and mechanical watches is the second hand. On quartz watches, the second hand almost always moves exactly once per second. On mechanical watches it moves at the same frequency as the balance wheel, so usually 3-5 times per second (up to 10 on some of the most high end watches) which gives the illusion of a "sweeping" second hand. Sweeping hands on quartz watches are possible but usually impractical because of the increased power draw. I think this is where I talk about my favorite type of watch movement ever - the Seiko Spring Drive :dragnhearteyes: Basically you have a mainspring wound by wrist movements (just like an automatic mechanical watch) which steadily unwinds. Part of this spring's kinetic energy gets converted into electricity which powers a quartz crystal. The oscillations of the crystal are then processed by an integrated circuit that uses them to precisely control an electromagnetic brake that slows down the unwinding of the mainspring. All the hands of the watch are connected to gears on the gear train which is in turn moved by the mainspring. The electromagnetic brake slows down the whole mechanism to the exact pace at which the gear of the second hand makes a full rotation in precisely 1 minute. The result is a second hand that sweeps in a perfectly continuous motion, more fluid than on even the very best of mechanical movements. All this while having the super high accuracy of a quartz watch and still running on mechanical power without a need for a battery. The Spring Drive is an insanely elegant piece of engineering and I would love to own a watch with this type of movement someday. (Sadly it still needs to be serviced like a mechanical watch because it still has a lot of moving components) Here's a 2 min video visualizing and explaining this tech: https://youtu.be/HoEorK6elZM