Unless you know the origin or the source OF a particular watch's movement, then if in a rep it is likely an Asian copy OF a Swiss movement. If you search the forums (search is your best friend.!) you will get a ton of info, mechanical and otherwise both pro and con Asian (or any ) movement. Asian 7750's HAVE been problematic out of the box in a lot of instances, question arises whether to service or replace. Certain reps, like gens have been using rep versions of movements for years, just find a particular watch, or brand, and research it. Don't be in a rush to spend extra $$$ on "swiss" it is 75% or better it is a copy; and if you are looking for that amount of quality or replication, don't be gun shy if you love the watch, I say. Either way, enjoy.!!