Swiss or Japanese movement?

What the two words actually mean

A Japanese base is a movement built by Seiko or Miyota — the NH35, the 8215, the 9015 and their relations — regulated and cased to suit the reference. A Swiss clone is a movement built to reproduce the architecture of the original calibre: the same bridge layout, the same rotor, the same beat, and in most cases a finish meant to be looked at through a glass caseback.

Neither is a counterfeit of the other. They are two different answers to the same question, and the price gap between them on any page here is the entire difference.

What the Japanese base buys you

Reliability that borders on stubborn. These are the workhorse movements of the whole industry: parts available everywhere, servicing cheap enough that any competent watchmaker will take the job, tolerances forgiving of a knock against a door frame.

What you give up is small and real. The seconds sweep is a touch less silky at 21,600 beats an hour than at 28,800. Some chronograph sub-dial layouts differ from the original because the base was never designed to match it. Through a glass back, the movement is honest rather than beautiful.

What the Swiss clone buys you

28,800 beats an hour — eight a second — which is the sweep the original has and the one the eye recognises without being able to say why. A date that snaps at midnight instead of drifting through it. Pushers with the resistance the original has. A reserve of around 72 hours on the newer bases, so a watch left off from Friday evening is still running on Monday.

And the thing nobody puts in writing: through a sapphire caseback, it reads correctly. If somebody who knows watches is going to turn yours over, this is the lane.

The figures we record before anything ships

Every Swiss calibre here runs a full day on the timing machine before your film is made, and the rate we measured goes on the film with it. We do not publish an average and hope; we publish the number your own watch produced. A movement that will not hold rate goes back to the bench rather than into a box.

Japanese bases are cycled the same way — wound, set, date changed forwards through midnight, chronograph run and reset — and anything that hesitates is rejected. The two-year warranty is identical for both, because the risk we are underwriting is our inspection rather than the movement's nationality.

Our advice, in one line each

Buy Japanese if the watch is a daily beater, a travel watch, a first mechanical piece, or if it has a solid caseback and will be serviced by whoever is nearest.

Buy Swiss if the caseback is glass, if the reference is one you waited years to own, if you handle watches often enough to feel a pusher, or if it will be seen by people who know.

If you are still undecided after that, send us the reference and how it will be worn. We will tell you which one we would take in your position, and we have talked plenty of people out of the dearer option.