The word Swiss or Suisse engraved on the dial of a watch has its own charm despite its vague designation. This is unacceptable to some as the details are not right Discussed, for the majority, this means that it is really big. But then again, you can’t wear any Swiss made mark. To obtain this designation, a certain percentage of the watch must be assembled in Switzerland, not necessarily the movement or its components. The entire watch does not need to be put together or its parts manufactured in Switzerland. At least, 60% of the manufacturing costs and necessary manufacturing steps must take place in Switzerland to be recognized as Swiss. However, many run after the Swiss mark regardless of the minimum 60% criteria. An easy way to tell if your watch is Swiss is to find out if it runs on a Swiss movement; For example, An ETA – This is the most elaborate stock Swiss movement among mass-produced Swiss watches. ETA has many derivatives, modified versions and clones (except those made outside of Switzerland; for example, China), which are also considered Swiss.
If you don’t find ETA but see names like Sellita and STP, in that case too, you’re getting Swiss! These movements are identical in construction and performance with an ETA with differences, some of which may not be noticeable to the bare, untrained eye or anyone without sufficient horological knowledge. These also come in specially modified forms, often with high accuracy and sometimes reliability.
ETA, Sellita and STP have long been suppliers of movements to various watch brands worldwide. Almost identical in their structure, this raises the question of many – how are they similar? Since 1973 the ETA 2824 has been a staple of many watch brands. The ETA caliber 2824-2 was introduced nine years later in 1982 based on the Eterna caliber 1427. It is considered to be a smooth, easy, reliable and robust movement that can be easily serviced and repaired.
Why did we bring up ETA in the context of discussing Cellita and STP? Here’s why.
Two Cellita And STP ETA 2824-2 capable of producing similar movements. However, there is more to the story.
Sellita was previously a long-time supplier of components to ETA, with the necessary know-how to build movements from scratch. The Cellita SW 200So, as good as ETA 2824-2 but STP 1-11 is also a clone of ETA 2824-2. STP – Product of Swiss technology; The smallest of the three – automatic movements – has been part of the American Fossil group since 2006 and since 2012.
Another question that may be on your mind right now is –
INot copying anything in violation of copyright/patent laws?
Not unless the design or concept is old enough that it is no longer protected under any patent right. Thus, both Sellita and STP – full-fledged Swiss movement-makers with such capable machines – copy, for the most part, ETA movements. As drug companies are making generic drugs after some time.
So, are the three interchangeable? Does it increase or decrease the value of the watch? To simplify: three identical clocks but one with 2824-2, another with SW200 and last with STP1-11; Are they valued equally? Also, valued by whom – the connoisseur or the average user? What values are they going to assign to each if not equal?
This leads to a very complicated answer, which is not guaranteed to be very accurate. Better yet, we pit the latter two against the 2824-2 and see which comes closest. It also tells us which of the two is better when pitted against each other.
It is compared to standard 2842-2. You can pretty much gauge how the two perform against the other three grades in the 2842-2.
- Sellita SW200-1: Mechanical lever movement, automatic winding, 28,800 vph, manual winding, hacking; High efficiency ball-bearing rotor, Novodiak/Incablock shock protection.
- STP1-11: Perlage finish, Glucider balance wheel, Nivaflex mainspring. Incabloc shock protection. 28,800 vph, manual winding, hacking;.
The STP1-11 is an improvement on the ETA 2824-2 and has everything that was loved and appreciated about the latter; Things long-term ETA users are used to. On top of that, STP adds longevity, better finish, better accuracy and a bigger power reserve.
The Sellita SW 200 exhibits the same quality levels as the ETA. It comes in four versions (standard, special/elaborate, premium and chronometer) like the ETA – from unadorned to high-end versions with a circular-grain (perlage) finish. You can also request to personalize the SW200; You can put engraving and blued screws and the likes. It uses Nivaflex for the mainspring and Novodiac shock protection in the Standard and Special, and Incabloc for the Premium and Chronometer versions.
|Power reserve||Accuracy||Jewellery||Quality & Finishing|
|movements||ETA 2824-2 / Sellita SW200||The STP1-11 uses a longer and thinner mainspring and therefore has a longer power reserve (44 hours) than the 2824-2. That’s 4 to 6 hours more than the ETA!||STP1-11 is typically within -3s/day and +7s/day and is more accurate than the ETA 2824-2 standard. The degree of precision is equal when moving towards elaborated (improved).
Top and chronometer versions. The STP1-11, however, beats the ETA several times over in terms of accuracy.
|26 jewels for STP1-11, which is one jewel more than 2842-2. This additional ornament supports the barrel arbor from the top. This extends the longevity of the barrel bridge and is a significant improvement over the 2824-2 design.||A good quality movement always presents a superior finish. The STP1-11 has a better finish than the rest of its class. It has a pearly (decorative pearl pattern) which is done by grinding small circles applied to the surfaces. It also features a Glucider balance wheel and Cote de Genève on the rotor. The standard ETA 2428-2 does not have it; Its markings are not implemented as in STP1-11.|
|ETA 2824-2 / Sellita SW200||Both the Sellita SW200 and the ETA 2824 store 38 hours (approx.) worth of power.||The Sellita SW200 Standard has an accuracy of +/-12 seconds per day, while its Special (Elabor), Premium, and Chronometer grades vary from +7 seconds per day and +/- 2 to +/-. 4 seconds/day while ETA clocks in between +/- 4 to +/- 30 seconds per day depending on grade. The Sellita SW200s are equal to the ETA in accuracy.||The Sellita SW200 has 26 jewels, one jewel more than its ETA counterpart which has 25 jewels. An additional jewel is located on the bridge side of the barrel arbor under the ratchet wheel, which replaces the ETA’s steel bearing. The 17th jewel in the 2824 is on the other side of the pivot, i.e. the dial side of the barrel. It makes little sense to have only one side of any axle ornament, so, Cellita injects an extra ornament into the design.||Like the ETA, the Sellita offers a variety of finishes (mentioned earlier), including a few different plating options and skeleton-dial versions, distinctly different from what the ETA offers.|
The original ETA movement, as we have seen, has 25 jewels (artificial rubies), one less than both the Sellita and the STP. The additional jewels of both are hidden in the mainspring barrel-bridge, supporting the mainspring barrel, which is placed under the ratchet wheel. ETA’s choice for the same space is a carbide bearing. Does it make any difference? Technically, nothing; Psychologically, perhaps a fair bit. It’s a common feeling with everything you hold dear; Not just a watch.
Other technical and optical differences are as follows:
The Standard All three versions are naked in optics. No decoration or embellishments. Bridges, rotor, cox – all superbly finished but lacking in attractive wear. They are jewels (red ruby and Polyrubin) in the anchor, material (gold plated nickel/glucider) makes their balance wheels and (Anachron And Nivarox 2) in hairsprings and control parameters.
STP and Sellita are equivalent alternatives to the ETA 2824-2, if not better from a technical point of view. Both are better classics, preferred over the ETA 2824-2 for:
- Better finishes and decorations.
- Better executed markings.
- Jewellery, barrel bridges.
- More longevity
- Improved performance and durability.
So that’s about it. If your watch movement needs a change or you just want a new one for your Swiss watch, the Sellita and STP-1-11 make excellent choices. You can read more about STP here Here. And go Here To read more about ETA 2824-2. This will give you a clear picture.
Keep falling Give your answers below. Which of the above ratio flysurfers would you most like to go for and which one would you rather go for?