Is the VS3235 a generic Dandong movement?

No. The VS3235 is a proprietary clone of Rolex's 3235 calibre, built to VSF's own specification. It shares the broad architecture of Dandong-family movements but is not the generic, widely-shared base that other factories drop into cases — that proprietary specification is the reason VSF holds its lead on the references it builds.

The Movement Room

VS3235 / VS3285 explained: what “proprietary Dandong-spec” actually means

Q: Is the VS3235 free-sprung?

Since 2026, some of them are. VS Factory shipped a free-sprung VS3235 on the titanium Yacht-Master 226627 in June 2026 and rolled it across the Datejust 41 126334 range in July 2026, with the regulator post above the balance removed and the reserve unchanged at roughly 70 hours. The description is contested, because that version carries no regulating weights on the balance rim, so it is free-sprung in appearance rather than in function; the JH3235 from Jinghe does carry regulating weights. Earlier batches are conventionally regulated and still circulate under the same name, so the batch matters more than the calibre name.

By TheRepTable · current as of August 2026

The verdict

The VS3235 is built by the Dandong movement factory to VSF’s own specification — not the generic Dandong base that other factories share, and not a VSF in-house calibre either. The VS3285 is the same story with a GMT module on top, for the GMT-Master II. The word that matters is exclusive: it is why VSF’s timekeeping holds where the shared bases drift.

Two errors travel together through almost every movement write-up in this hobby: that the VS calibre is just the generic Dandong movement everyone else uses, and that whether it is free-sprung is a settled question. Neither holds. Here is the version that is actually true, updated for what changed in 2026.

What it is

The VS3235 is VSF’s clone of the Rolex 3235, the modern workhorse automatic that sits inside the current Submariner, Datejust and the rest. The VS3285 is the GMT variant — the same base architecture with a true GMT complication for the 126710 and 126720 GMT-Master II. When people say “VS calibre” they usually mean one of these two.

“Proprietary Dandong-spec” — in plain terms

Most factories that build a 3235-style movement use a shared, widely-available base from the Dandong family. It is a perfectly serviceable engine, and it is everywhere, which is the point: when a base is shared, every factory using it inherits the same ceiling. VSF’s version is built to its own specification rather than pulled off that shared shelf. That is what “proprietary” means here — same broad family, different and tighter spec, not the generic part everyone else is dropping into cases.

You feel the difference in tolerances rather than features. The escapement holds rate more consistently, the date mechanism is crisper, the winding is smoother. None of that photographs. All of it is why the same factory keeps winning the verdict pieces.

The free-sprung question, updated for 2026

Set the record straight This desk used to say flatly that the VS3235 is not free-sprung. That was true for years and it is no longer true as written. In June 2026 VS Factory shipped a free-sprung VS3235 on the titanium Yacht-Master 226627, and in July 2026 it rolled across the Datejust 41 126334 range — the regulator post above the balance removed, reserve unchanged at roughly 70 hours. What is still fair to say is that it is free-sprung in appearance more than in function: a genuine free-sprung balance moves the regulating job to weights on the balance rim, and the VS version has no weights, which deletes the adjustment mechanism rather than upgrading it. The JH3235 from Jinghe does carry real regulating weights. And plenty of conventionally-regulated earlier batches are still selling under the identical name. So the useful question is no longer “is the VS3235 free-sprung” but “is this one, and which half of free-sprung did it get?”

The full three-way breakdown — VS3235 against the VR3235 it gets confused with, and why VS3235 and DD3235 are the same movement named twice — is in the dedicated comparison.

Why this matters when you buy

Because the movement is the part you cannot see in photos and cannot easily swap later, it is the part most worth getting right — and the part most guides skim because it does not make a pretty carousel. When two Subs look identical across a table, the calibre is the tiebreaker. Knowing what the VS3235 actually is, and what it is not, is how you read past a seller’s adjectives to the thing you are actually paying for.

Current as of August 2026, corrected for the 2026 free-sprung change. Movement details are checked against pieces in hand; if a fact here ages, the date is your flag.

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