Hello. The submariner reps will have either a Chinese clone movement (not Japanese) or a Swiss movement. There's no reason why a Chinese clone movement wont last a very long time if you service it. The origins of Swiss movements in reps are unknown. The reps will be assembled in relatively poor quality control 'factories' so it is not un-common for movements (swiss and clone) to me marked with finger prints bits of food etc. Hence, there is no guarantee that a Swiss movement, in a rep, would be any better. There's a lot of info on the forums on the pro's and con's of clone vs Swiss movements. I would suggest you do a search and make up your own mind to suit your personal needs, budget etc. good luck with your purchase.