Yeah, I should have given a longer response than the simplified version It's a very complicated issue because many are assembled in china and destined for the chinese market... even the dealers have no idea sometimes whether the movements are swiss or chinese. In the end, IMO, it makes little difference. I have a chinese copy 2824 that isn't even a genuine ETA (it's in an Alpha sub) and it's kept perfect time for almost 3 years with no problems.