The movement had to be automatic. The challenge was finding a movement that was premium, affordable and reliable. If a watch can’t keep good time, it doesn’t really matter how great looking or high quality the rest of it is.
It aslo had to be hand windable (with power reserve indicator), and it had to have hacking seconds. Easy to set because the second hand stops.
Automatic means that as long as you wear the watch every day or two it should keep itself wound up enough to keep going.
Hand winding means that if the watch does stop after a period off the wrist, you can start it again by just winding it up.
Hacking seconds means that when you fully pull the crown out the seconds hand stops, making it easier to accurately set the time.
Japanese movements don’t have the name and prestige that Swiss movement do, but they are actually very good, reliable and high in value. The miyota 9000 series caught my eye. Mechanical movements that are made to compete with some Swiss ETA movements! but much cheaper. I finally settled on the miyota 9132 because of the power reserve (40 hours) indicator. A premium movement but still affordable.