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Hello and welcome.
Both statements about movements are correct. Earlier watches could indeed be overwound, but since the development of that clutch mechanism, it is almost impossible to overwind an automatic (assuming the manufacturer assembled it correctly).And even though these are "self-winding", they will run down in an abnormally short amount of time if not fully wound first.
It could be you're not winding it fully, or there's a problem in the winding train preventing the mainspring from being fully wound. Give the crown a good FULL 40 turns. Visually inspecting the mainspring (don't confuse this with the balance spring :T) helps too. If that doesn't solve the problem, try taking it back to the store for an exchange. That is the quickest and cheapest fix.
Both statements about movements are correct. Earlier watches could indeed be overwound, but since the development of that clutch mechanism, it is almost impossible to overwind an automatic (assuming the manufacturer assembled it correctly).And even though these are "self-winding", they will run down in an abnormally short amount of time if not fully wound first.
It could be you're not winding it fully, or there's a problem in the winding train preventing the mainspring from being fully wound. Give the crown a good FULL 40 turns. Visually inspecting the mainspring (don't confuse this with the balance spring :T) helps too. If that doesn't solve the problem, try taking it back to the store for an exchange. That is the quickest and cheapest fix.
