MOVEMENT GUIDE
Regulated vs Free-Sprung Movements
Every RICH Factory watch is available in two movement configurations. Here is what the difference actually means — in accuracy, in maintenance, and in your wallet.
A regulated movement uses the traditional method of rate adjustment: a regulator index and a hairspring stud that let a watchmaker speed up or slow down the watch by shifting the effective length of the hairspring. This is the industry-standard architecture used by ETA, Seiko and most of the watchmaking world for decades. Its great practical advantage is serviceability — virtually any watchmaker anywhere can regulate and maintain it, quickly and cheaply. On a closed-caseback watch the movement is never seen anyway, which is why this configuration is the pick of many buyers of solid-back models.
A free-sprung balance has no regulator index at all. Rate adjustment is done with precision micro-screws or weights on the balance wheel itself. This is the architecture Rolex adopted for its in-house calibers, and it is what the genuine 3235/3285-class movements use. Removing the hairspring-stud interaction makes the rate more stable across positions and over time — the balance is less disturbed by shocks, and timing holds better as the mainspring winds down. The trade-off: servicing requires specialist tools and know-how, which is why free-sprung movements cost more at every level of the market.
| Regulated | Free-Sprung | |
|---|---|---|
| Rate adjustment | Regulator index + hairspring | Balance-wheel weights (like gen Rolex) |
| Positional stability | Good | Better — holds rate across positions |
| Service & parts | Any watchmaker, low cost | Specialist tools, higher cost |
| Typical power reserve | ~48 hours | ~70 hours |
| Price position | Standard (listed price) | +$150 upgrade |
Power reserve varies by caliber — check each model's spec line for its exact movement and reserve.
Solid caseback models — GMT-Master II, Submariner, Sea-Dweller, Daytona and similar — hide the movement completely. If you will never see the caliber, the regulated version delivers the same look, same feel and dependable timekeeping for $150 less. That is why many closed-back buyers choose it.
Display caseback models and Rolex purists — if you want the exact genuine-style balance architecture under the glass, the visual fidelity of free-sprung finishing, the longer reserve and the best positional stability, take the free-sprung upgrade. It is the configuration that matches what Rolex actually builds today.
On every product page you will find a Movement selector: the listed price is the regulated version, and the free-sprung upgrade is shown alongside at +$150. Pick one before adding to cart — the total updates instantly, and the movement you choose is what we source, QC and ship. Not sure? Reply to your order confirmation and we will walk you through it.
Is free-sprung automatically "better"? Mechanically yes — it is the architecture genuine Rolex uses and it holds rate more consistently. But "better" only matters if you can see the movement or push it hard; for a solid-back daily wearer the regulated version is the sensible value pick.
Can I upgrade after ordering? Before we source your watch for QC, yes — just reply to your confirmation email and we will adjust the total. Once QC photos are sent, the configuration is locked.
Is the free-sprung version harder to fix if something goes wrong? Servicing is more specialist, which is why the flagship movement carries a higher price. Both versions are covered by the same 2-year movement warranty.
Contact us and we will recommend the right configuration for your model.