Why is the VS Factory Rolex Day-Date DD not weighted despite the Dandong 3255 movement inside?

The Rolex Day-Date 3255 model is produced by VS Factory with a solid 316L stainless steel case, standard case diameter and high-precision automatic Super Clone movement architecture. It is among the most successful 1:1 super clone watch reviews on the market, with its sapphire crystal AR coating glass, original case tolerances and detailed workmanship.

Dial and Hand Details

This time, VS Factory offered four color options: blue dial, black dial, white dial and black-gray dial. Among these, the blue model became the best-selling model with its classic structure that fits every style. The case is made of 316L steel and the total weight is around 147 grams – quite light indeed compared to some versions marketed as “super weighting”, which often weigh over 200 grams. But don't jump to conclusions: It's not that VS Factory can't make heavy watches, it's because it knows very well that "heavy ≠ good". Many high-grammage versions use coating or composite material to increase hand feel; When worn for a long time, problems such as paint peeling and color fading occur very easily, which negatively affects both the appearance and the lifespan.

1. Comparative test of basic parameters

1. Power system

The test result of VS 3255 when fully installed is 71.5 hours of uninterrupted operation; This largely coincides with the officially stated 72 hours. When disassembling the gear group, it was seen that the mainspring box structure was extremely compatible with the original 3235; This confirms the claimed parts interchangeability (needs to be checked with professional tools).

2. Revolution in auto rotor bearing

Disassembly of the automatic module showed the following: VS uses a 27-stone full-bearing structure; bearing diameter and engagement angle are the same as the original. Compared with a version on the market using a 7-stone bearing, the installation efficiency is 40 percent higher according to test results (the 8-hour no-motion test difference reached 1/4 turn).

3. Critical difference in installation system

Under the microscope, it can be seen that the winding intermediate gear shaft of the VS is of flat cylindrical design; This is in marked contrast to the screw-shaped structure of the older 3135 used in the Shanghai version. This improvement leads directly to a smoother setup feel and a reduction in torque transfer loss by approximately 15 percent.

4. The truth of the calendar module

Disassembling the calendar module revealed the following: when the day disk is removed, the VS version does not actually have the redstone bearing; This matches the features of the original 3235. The Shanghai version, on the other hand, retains the red stone structure of the 3135 movement, and this is the main verification point to distinguish the “real integrated movement”.

5. Sensitivity of calendar components

The tooth angle and grip depth of 4 critical gears of VS, such as the day changing gear group and the calendar positioning spring, have an error margin of less than 0.02 mm compared to the original. In real tests, date change accuracy was measured as 23:58 ±2 minutes (23:57 ±1 minute in the original).

6. Crown structure: decisive evidence

Disassembly of the pull mechanism showed that: VS uses three-position split structure (time/date/setup), which is the same as the original; The Shanghai version still remains in the two-stage structure of 3135. This means that the way the VS version sets the calendar is exactly the same as the original (the date jumps forward when setting the time by turning it counterclockwise).

2. Stability test

Daily error remains within ±5 seconds. The date skipping success rate is 100 percent. There is no lag in power transfer.

The return/repair rate is actually 0 percent right now (based on a sample of 50 units).

3. Sonuç

This 3255 movement from VS has truly achieved three major breakthroughs

True integrated design (not assembly or retrofit). High compatibility of critical structures with the original. Significant improvement in operating stability.

It is also worth noting that although the weight is slightly lighter, the comfort when worn in the hand is actually better; Especially ideal for daily use or long-term use. The “208 gram” versions often increase the weight by thickening the strap or filling it with metal; It's flashy but hollow, even sacrificing the wearing experience.

VS Factory always adheres to the principle of “quality control comes first”. This DD double calendar model is a textbook in detailing: the dog-tooth bezel is finished in a natural engraving, the hour markers are round and plump, the brushed workmanship with a radial pattern is clear and sharp, the oil-printed inscriptions are smooth and burr-free. More importantly, the Dandong 3255 movement it carries is currently the only replica movement on the market that truly targets the original structure — 27 red stones, quick-jump calendar and day skipping simultaneously, the setting logic completely reproduces the operating logic of the original (pulling to the first position, setting the date/day, setting the time in the second position); Moreover, its operation is stable and the return/repair rate is extremely low.

However, it should not be forgotten that the only watch currently available for VS Factory is the blue model; Other models may come in the future. The weight of the watch is approximately 143 grams; The main thing to pay attention to for VS Factory is definitely the development on the mechanism side! Of course, if VS Factory can increase the weight to around 210 grams, it can gain an unrivaled position in the replica watch market.

General Evaluation and Conclusion

Overall, this Day-Date DD dual calendar model from VS Factory may not be the most “heavy and plump” option, but it is definitely one of the options with the most accurate details, the strongest stability and the closest to the original experience. If what you are looking for is reliability in long-term use and a high similarity rate, not a temporary "feeling of weight", this model is undoubtedly a good choice in today's market.
I hope this article was useful to you. We will share more detailed disassembly, real shot review and real-replica comparison in the future.