This model ETA2824A2 is very durable and has high precision. After upgrading the materials of some accessories, it is not worse than 2892. The disadvantage is that it is a little thick. Tissot and Ti Tuo like to use this action.
7750 movement
Throughout the history of ETA, there have been many good kernels: ETA-7750, formerly known as Valjoux7750, belongs to Valjoux's most famous timing kernel. Later, because Valjoux was acquired by ETA, this classic Valjoux7750 was naturally renamed ETA-7750.
Valjoux 7750 was published in 1974. At first, only 17 stone was designed, and later it was changed to 25 stones. After being acquired by ETA in 1980s, few people use the word Valjoux now, unless those movements produced before being acquired in 1980s still keep their old names. ETA 7750 came out in July 1 9741and became a proud model of eta. Over the years, it has been common in various brands of self-winding chronographs and complex menus. The standard 7750 is equipped with 17 rubies, which can be stored for 42 hours and vibrate 28800 times per hour. One-way winding design is adopted, the pointer fine-tuning device with the same principle as eccentric screw is used, and there is scale indication, which is convenient for fine-tuning operation. Some people say that ETA-7750 is a dead wood. I don't know why, maybe 7750 is a little general in its technological intention, but one thing remains the same: simplicity is durable, and durability is reliable. ETA-7750 is such a chronograph movement.
ETA-7750 is a unidirectional winding movement. I don't know why ETA hasn't been changed to two-way. A friend once discussed it and came to the conclusion that "unidirectional winding is more efficient than bidirectional winding." I still don't understand the theoretical basis of this conclusion. In fact, the problem of low winding efficiency of ETA-7750 is well known. Sometimes it's good to bring forth the old and bring forth the new, but it's a bit embarrassing to make something out of nothing.
ETA-7750 adopts push rod timing structure, which is simple and easy to maintain. Aesthetics is certainly not as good as Langdong 100 1 (different from Santana and Mercedes-Benz), but it is indeed one of the best schemes in terms of timing function. The whole watch industry should thank the existence of ETA-7750, because with it, more watch factories can produce chronograph watches. And you can avoid all the expenses of developing your own timing core. In addition, we all know that even if you invest a lot of money, you may not be able to come up with a more durable chronograph movement than ETA-7750. Take the doctrine, here is the best strategy.
How to identify ETA-7750 with the simplest method? At 6 o'clock, 9 o'clock, 12 o'clock, 99% of the small disks are ETA-7750, but this is irreversible. If a watch is not at 6 o'clock, 9 o'clock and 12 o'clock, it cannot be said that 99% is not ETA-7750. Just like Transformers. Its advantage is not only durable, but also changeable. From 2 small boards to 3 small boards to 4 small boards, you can change from ETA-7750. It's like 6 o'clock, 12 o'clock.
2892 movement
A friend once argued about who had the best automatic movement. A lot of choices, and finally fell on two movements: Rolex Cal, 3 135, ETA2892A2. There is no denying that Rolex Cal, 3 135 is strong and stable. If the size of 3 135 is reduced to ETA2892A2, who is better? At this size, of course, the ETA2892A2 automatic movement is indispensable.
ETA2892A2 is now used by most high-end brands, including Wanguo, Omega and Longines. Among them, IWC used the movement changed from ETA2892A2 in its Aquatimer diving watch. IWC not only increased the polishing of the splint, but also changed the size of the balance wheel and replaced the hairspring, and passed the certification of the Observatory. In fact, even if the quality of ETA2892A2 is not polished by a big factory, it is absolutely a piece of cake to pass the certification of the Observatory with the help of ordinary tuning equipment.
Well-known middle-priced brands are often used in high-end watches, especially timepieces, and even some brands in high-end watches are also in use, but they pay more attention to polishing and carving, or replace them with K-gold or pure white gold automatic discs. At the same time, 2892 is recognized by all watchmakers as one of the most precise and stable ETA watches. Equipped with ring balance wheel, 2 1 stone, two-way automatic winding, vibrating 28800 times per hour, and "eccentric screw trimmer" for convenient and precise fine adjustment. Because of its good quality, it can be transformed into a well-designed movement with a little modification. Even the recently popular Omega coaxial escapement table was modified to 1 120 on the basis of 2892, and the speed was adjusted by two counterweight screws on the inside of the balance wheel. The number of Omega was 2500, and the number of rubies also changed. The chronograph trilogy, like ULYSSE NARDIN, sets the astronomical watch with 2892 as the basic movement, becoming a super-small complex astronomical watch, which is the greatest masterpiece of Athens watch.
What needs to be mentioned more is the Omega Cal 2500/2500B/2500C movement. Omega coaxial movement is also a masterpiece modified on the basis of ETA2892A2. The coaxial escapement system without clamp spring will greatly prolong the oil washing time of the watch, and the coaxial movement will not help to improve the accuracy. After a test, the coaxial butterfly chronograph will see an error after 12 hours. Why are so many powerful watch manufacturers unwilling to develop a simple large three-needle movement by themselves? If the products produced after spending too much manpower, material resources and financial resources can't surpass ETA2892A2, who will be willing to do it?
However, ETA2892A2 also has some shortcomings, that is, the winding efficiency, which is an inherent problem of ETA2892A2, but it can be made up by appropriate changes. For example, Omega Cal 1 120 changes the three screws on the automatic bracket into eccentric fixing, changes the shape of the automatic bracket, and moves the center down. (Omega hippocampus)
2824 movement
Usually, cousins who are new to mechanical watches first know or use ETA2824-2 and Seiko's 7S26 movements, among which ETA2824-2 is not only stable and accurate, but also has the function of hand-refining, so although the price is higher than that of Japanese movements, it is still the first choice for beginners in all aspects. It is listed as one of the three treasures of ETA together with ETA 2892-A2 and ETA 7750 (in addition, the series 6497 and 6498 are also catching up in recent years), but the price is much lower, so many fake watches and so-called watches made in Taiwan and Hong Kong also use this movement. As a result, many people feel sick as long as they hear ETA2824-2, ignoring its excellent essence.
If ETA2892A2 is customized for the high-end market, then ETA2824-2 is specially designed to meet the darling of the low-end market. The structure of ETA2824-2 is slightly thicker than ETA2892A2, and the winding bracket is simpler than ETA2892A2, which fixes three screws instead of one screw. On the contrary, this method makes ETA2824-2 have no defect of insufficient winding.
ETA2892A2 and ETA2824-2 have occupied half of the field of Swiss automatic watches, and ETA has occupied more opportunities and interests in the struggle against many self-made movements. In fact, by carefully comparing the structures of ETA2892A2 and ETA2824-2, the latter is simplified, and the cleverness of ETA lies in this-simply simplifying unnecessary excellent fields, thus reducing the cost and lowering the selling price. Which movement to buy in the end depends entirely on the watch factory itself.
Compared with ETA2892-A2, the higher-level ETA2824-2 is almost the same in all aspects, so the performance of ETA2824-2 is quite good. But the design itself is mass production, and the details of parts and substrates are more or less handled, which will also cause people's criticism. However, due to the price positioning of the factory, ETA 2824-2 mostly appears in the list of low and medium prices. Therefore, at a reasonable price, using ETA 2824-2 movement, I think fans will also be very supportive, not just ignorant criticism.
6497 movement
Unitas' classic product, 6497, naturally belongs to ETA after being acquired by ETA. After experiencing the timely storm that suffocated the Swiss in the 1980s, 6497 became the only remaining large-size pocket watch movement. At that time, 6497 was too big to use. The wind and water have turned, and the 6497 has ushered in its own spring-the popularity of large watches has arrived, and the size of the 6497 just caters to the needs of almost all large watch cases. Because of its huge volume and reasonable structure, the accuracy of 6497 is surprising again. Although it is only a low-frequency pendulum of 18000A/H, it can easily pass COSC certification and beat many small high-frequency movements out of the water.
Many people are saying that the hand-operated movement is the ultimate goal of watch fans, and only the hand-operated movement is the most direct communication between people and watches. The 6497, which used to be a pocket watch movement, is really big, but it also brings us great beauty. The pendulum frequency of 18000A/H is huge. Panerai has two completely different ways to polish 6497: the first is to carve the words Panerai on the plywood, and the second is to polish it with ordinary Geneva stripes. Carefully compare these two different treatment methods, the latter is more unique in polishing.
Also related to 6497 is Omega's iron watch, which was once designed for railway workers to keep accurate time. The huge case is loaded with the 6497' s twin brother, the 6498 movement-only a small change was made in the position of the small second hand, and the original 9 o'clock second hand was changed to the traditional 6 o'clock second hand. There is also a German watch using 6497, which is d. Dornbluth &；; Sohn, which was modified from 6497, mainly used the 6497 gear train. The Germans specially polished the movement, showing a completely different appearance from the Swiss style: pink 3/4 splint, exposed steel winding wheel, ruby bearing fixed by blue steel screw, and adjusting screw of balance wheel-everything is more beautiful.
700 1 movement
From Valjoux7750 at the beginning, to Unitas6497 later, to Peseux700 1 now, it seems a bit funny. When we re-examine the five most classic moves in the ETA family, we find that three of them come from the successful acquisition of ETA.
ETA700 1 can be said to be the summary of the traditional Swiss three-needle edition. Its appearance is small and exquisite enough, which is different from 6497. After all, there are more hand-rolled watches with a diameter of 38mm or even smaller that need ETA's attention. Just like the classic combination of ETA2892A2 and ETA2824-2, ETA700 1 fills the field of small-caliber hand-cranked watch movements well, and we have to admire the strength and market control of ETA. Its appearance has led many manufacturers who can't or don't want to develop their own movements to produce hand-cranked three-needle watches. Since 197 1 was designed and manufactured, the influences of 2660, 269 1 and 280 1 before and after it are not as great as 700 1, and even countless Omega's are capitalized manually.
Because the size of 700 1 is much smaller than 6497, the swing frequency is also increased from 6497 18000A/H to 2 1600a/h, and some people always think that the swing frequency of 700 1 is reduced to1800 a/.
This paper briefly reviews the five most noteworthy trends in ETA's existing products. What would Swiss watches do if there were no ETA in the world? There will naturally be ETB and so on. The influence of ETA on the whole Swiss watch industry and even the world watch industry can not be ignored.
What led to the maturity of large-scale industrialization? It is OMEGA 19 that makes the movement come out. As far as the production, maintenance and repair of the movement are concerned, the birth of Omega 19 makes the mass production and maintenance of the movement possible. In the following hundred years, the Swiss who experienced the timely revolution, with the support of ETA, have come to this day and will continue to go on. Today, a hundred years later, when we look back at the history of Swiss watches, I hope ETA can become a milestone and be affirmed by future generations.
ETA motion parameter comparison table:
Year characteristics of model dynamic diameter, thickness, drilling number and vibration number
ETA2000 automatic 4219.4mm 3.6mm 2081992 three-pin calendar
ETA2004 automatic 42 23.3mm 3.6mm 20 8 2002 three-pin calendar
ETA2094 automatic 42 23.3mm 5.5mm 368 2002 2004-1.9 permanent second hand, 3: 30, 6: 12 hours.
ETA2660 hand roll 4217.2mm 3.5mm17 8 2002 three stitches.
ETA267 1 automatic 3817.2mm 4.8mm17 819712660 plus automatic calendar.
ETA2678 automatic 3817.2mm 5.35mm 2581971three stitches.
Year characteristics of model dynamic diameter, thickness, drilling number and vibration number
ETA280 1-2 manual scroll 46 25.6mm 3.35mm1781980 2824 has no automatic calendar.
ETA2804-2 manual roll 46 25.6mm 3.35mm1781982 2824 has no automatic payment.
ETA2824-2 automatic 38 25.6mm 4.60mm2581971big three-needle calendar
ETA2834-2 automatic 38 29.0mm 5.05mm 25819712824-2 plus weekly payment.
ETA2836-2 automatic 40 25.6mm 4.60mm2581982 2824-2 plus bilingual weekly payment.
ETA2846-2 automatic 49 25.6mm 5.05mm 2161987 2836-2 cheap version.
ETA2892A2 automatic 42 25.6mm 3.60mm2181983 three-hand calendar. 12 24-hour clock, 6 o'clock dynamic display.
ETA2893- 1 automatic 42 25.6mm 4.10mm2181983 2892autc.
ETA2893-2 automatic 42 25.6mm 4.10mm2181992 2892a2 plus central 24-hour meter.
ETA2894-2 automatic 42 28.0mm6.10mm37 81996 2892a2+three-eye timer, dial 3: 00, 9: 30, 6: 00 12 hours.
ETA2895- 1 automatic 42 25.6mm 6.10mm3081996 2892a2 Small 3-pin version.
ETA2896 automatic 42 25.6mm 4.85mm 22 8 2003 2892A2+ big calendar
ETA2897 automatically displays the dynamic position of 42 25.6mm 4.85mm 22 8 2004 2892A2+7.
Year characteristics of model dynamic diameter, thickness, drilling number and vibration number
ETA6497-2 Handroll 46 36.6mm 4.5mm17 51950 Small Hand (L'Epine Crown Second Hand).
ETA6498-2 hand roll 46 36.6mm 4.5mm17 51950 small needle (Savonette, crown right 90 degrees).
ETA700 1 hand roll 42 23.3mm 2.5mm1761973 small needle.
ETA7750 automatic 44 30.0mm 7.9mm 25 8 1973 three-eye timing.
ETA775 1 automatic 44 30.0mm 7.9mm 25 8 1973 three-eye timing and moon phase
ETA7753 Automatic 44 30.0mm 7.9mm 25 8 2002 7750 Revision 2
ETA7754 Automatic 46 30.0mm 7.9mm 25 8 2003 7750 Revision 3
ETA7758 Automatic 44 30.0mm 7.9mm 25 8 2003 7750 Revision 4
ETA7760 manual reel 44 30.0mm 7.0mm17 8 20037750 automatically shrinks.
ETA7765 manual reel 44 30.0mm 7.0mm17 8 2003 7760 minus week sum 12 hour meter.
ETA7768 hand scroll 44 30.0mm 7.0mm17 8 20037765 plus moon phase
ETA7770 automatic 44 30.0mm 7.9mm17 8 2002 7750 revision.
ETA268 1 automatic 3819.4mm 4.8mm 25819712671+weeks.
ETA2685 automatic 3819.4mm 5.35mm 25819712681+moon phase.
ETA2688 automatic 4419.4mm 5.35mm17618712681cheap version.