July 2026
Head-to-head comparison of the DD3235 and VS3235 clone movements. Accuracy, power reserve, reliability, and real-world user performance data.
🔗 Related: RICH Factory vs VSF — full factory comparison · RWI 2026 factory rankings · Free-sprung movements explained (JH3235/JH3285)
The DD3235 is a clone of the Rolex 3235 caliber, manufactured by China's Dandong Watch Factory and used in RICH Factory's Submariner Date and Datejust watches. It is a free-sprung automatic movement: instead of a regulator, it uses four regulation weights on the balance wheel — the same architecture as the genuine Rolex 3235 — which keeps it accurate across positions without a speed-adjuster lever. If you are comparing movements while choosing a watch, this is the Dandong-built 3235-class clone; the newer JH3235/JH3285 naming covers RICH Factory's current regulated and free-sprung tiers (see the free-sprung guide).
| Caliber | DD3235 — clone of the Rolex 3235 |
| Manufacturer | Dandong Watch Factory (China) |
| Type | Automatic, free-sprung balance, fully traversing balance bridge |
| Accuracy | −2/+4 s/day real-world; +2.8 s/day average in 6-position testing |
| Power reserve | ~63–65 hours real-world |
| Found in | Submariner Date 126610LN, Datejust 41 and other RICH Factory Submariner Date / Datejust models |
The Rolex 3235 caliber is one of the most advanced mechanical movements in production, featuring a Chronergy escapement, a free-sprung balance, and 70 hours of power reserve. Replicating this movement accurately requires significant engineering investment. Two factories have emerged as leaders: Dandong (producing the DD3235 used exclusively by RICH Factory) and VSF (producing the VS3235 for their own watches). While both aim to replicate the Rolex 3235, they take different approaches with meaningful differences in performance and reliability.
The DD3235 is manufactured by the Dandong Watch Factory, widely regarded as China's most accomplished movement manufacturer. This movement features a true free-sprung balance system with four regulation weights on the balance wheel — identical in concept to the genuine Rolex 3235. The balance bridge is fully traversing (two-point mounted) rather than cantilevered, providing better shock resistance and positional consistency. In real-world testing, the DD3235 achieves accuracy of -2/+4 seconds per day with a power reserve of approximately 65 hours. The winding efficiency is excellent, with the rotor operating quietly and smoothly. These movements power RICH Factory's entire Submariner and Datejust lineup, including the Submariner 126610LN and Datejust 41.
The VS3235 is VSF's in-house clone movement. It also uses a free-sprung balance system, though the balance bridge is cantilevered (single-point mounted) rather than fully traversing. Power reserve is approximately 60-65 hours, and accuracy typically falls within -3/+6 seconds per day. The rotor decoration is more elaborate on the VS3235, with engraved Geneva stripes that are visually closer to the genuine Rolex finish. However, the cantilevered balance bridge means the movement is slightly more susceptible to positional errors. The VS3235 has been on the market longer and has a well-established track record.
When tested side by side under controlled conditions, the DD3235 shows a slight edge in positional consistency. In a 6-position timing test over 48 hours, the DD3235 averaged +2.8 seconds per day with a maximum deviation of 4.2 seconds between positions. The VS3235 averaged +4.1 seconds per day with a maximum deviation of 6.8 seconds. The fully traversing balance bridge on the DD3235 is likely responsible for this improved consistency. In terms of power reserve, both movements reach approximately 63-65 hours in practice — slightly below Rolex's claimed 70 hours but more than sufficient for daily wear.
Both movements have demonstrated strong reliability in long-term use. The DD3235 has been in production since early 2025 and has accumulated a solid reliability record in the RWI community. Replacement parts for both movements are available through various channels. The DD3235 benefits from Dandong's established supply chain, while the VS3235 has broader third-party support due to its earlier market introduction. For most buyers, reliability is comparable between the two — the choice comes down to the fractional accuracy advantage of the DD3235 versus the more elaborate decoration of the VS3235.
If you are buying a RICH Factory watch, you get the DD3235 — and this is an advantage, not a compromise. The DD3235's fully traversing balance bridge, superior positional accuracy, and slightly longer power reserve make it the better technical movement. The primary reason to choose the VS3235 would be if you prefer VSF's overall watch finishing over RICH Factory's, rather than for any movement advantage. Browse the full collection to see which watches are powered by the DD3235.
The DD3235 movement consistently runs within -2/+4 seconds per day in real-world use, with a 6-position average of +2.8 seconds per day in independent testing. Its free-sprung balance and fully traversing balance bridge give it an edge in positional consistency over rival clones.
Yes, most watchmakers familiar with clone movements can service the DD3235. Parts availability is good through Dandong's distribution network.
The DD3235 has demonstrated slightly better accuracy in independent testing, averaging +2.8 seconds per day compared to the VS3235's +4.1 seconds per day.
Both achieve approximately 63-65 hours in real-world use. The DD3235 has a very slight edge, typically running 1-2 hours longer than the VS3235.