VS3235 Movement Analysis: Why VSF's Caliber Dominates

Technical Specifications

The VS3235 operates at 28,800 vph with a 70-hour power reserve. The balance wheel is a free-sprung Glucydur-style design with four timing screws. Amplitude on a healthy example sits in the band watchmakers treat as normal — roughly 250 to 310 degrees — though we have not measured a factory-fresh sample ourselves. The automatic winding uses a bidirectional rotor with ceramic ball bearings for reduced friction.

Accuracy Benchmarks

Owner-reported timing for this caliber lands where you would expect a well-made clone of a modern Rolex movement to land: a few seconds per day across positions, with the usual spread between dial-up and crown-down. Those reports come from individual timegrapher photos posted in owner threads rather than from a controlled sample, so read them as an indication of what the caliber is capable of, not as a specification. For reference, COSC certification requires −4/+6 seconds per day.

Reliability Data

No failure-rate data exists for clone movements from any party that would stand up to scrutiny, so a "95% twelve-month survival rate" is a number someone constructed rather than measured. What the dated threads do support: rotor noise that develops over months and improves with lubrication, occasional rate drift that needs regulation, and no credible pattern of calibers stopping dead. Treat any survival percentage — including the one this page used to quote — as unevidenced.