I Used My Watch To Compare The New And Old Rolex Observatory Standards

It is not too late to get to the topic. At first, I wanted to compare Rolex’s new top-level observatory standard with Omega’s Extreme Observatory standard. However, I considered that I had only one omega, and that I was a manual moon landing supercar that was completely out of touch with the current standard of omega, so I gave up the idea. On the other hand, I was very interested in Omega’s new Zamba before, because the new Zamba is obviously the new flagship model of Omega at present, especially the compact dog ring and gossip not only have a strong retro color, but also look Very luxurious, coupled with high cost performance, these are all exciting. However, after tangling, in the end, he didn’t buy Zunba, but instead ‘fell in’ Rolex. This time to give up the Patronage, in exchange for a Rolex using the new observatory standards. This also gave me the opportunity to compare the Rolex’s old and new observatory standards. Rolex’s previous observatory standard was + 6 / -4 seconds per day, and the new standard was + 2 / -2 seconds per day.

Swiss official observatory logo
   Since 1951, all Rolex watches have basically reached the standard of the observatory at that time (the standard of the observatory at that time is not the same as now, not + 6 / -4). By 1957, Rolex believed that the official Swiss observatory standard could no longer meet the needs of Rolex, and the travel time accuracy of Rolex watches had exceeded the official observatory standard, so Rolex was determined to use its own observatory standard. This is the origin of Rolex’s Superlative Chronometer. .
   The Swiss Observatory standard has been adjusted several times in different periods. From 1961 to 1973, the standard was -1 / + 10 per day. After 1973, it was adjusted to the current -4 / + 6 per day. For some reason (mainly a problem jointly developed by Switzerland, France, and Germany), the observatory standard has not been adjusted from -4 / + 6 seconds in 1973 to today. For current watches, reaching the standard of -4 / + 6 seconds is not a very difficult task (although most watches are still not certified by the Observatory). Therefore, many of the watches at affordable prices have passed the observatory certification. In order to reflect its own level and form a difference from general brand watches, Rolex raised the standard of the Superlative Chronometer to + 2 / -2 per day in 2015. Starting with Rolex’s new DAY DATE 40 (using the new generation 3255 movement), all Rolex watches thereafter, including women’s watches, whether using 31XX movement or 32XX movement, all meet the new daily error + 2 / -2 seconds standard . We can see from Rolex’s official website that all watches have been changed to + 2 / -2 seconds in the accuracy column. Although we sometimes use a machine to measure the travel time of a watch, although the machine is accurate and can be accurately measured in all directions, it is still different from the actual wear. The travel time of the hand is often different from the number measured by the machine. . So I recently used three watches, each of which was worn for a few days, for a small comparison. The movements of these three watches are respectively 2892 without the observatory certification, 3135 of the old standard, and 3135 of the new standard.

Rolex’s top observatory, also known as the Superlative Chronometer.
   The first is 2892. My 2892 is a watch without an observatory certification. I feel that many watch factories like to adjust the watch a little faster. Maybe people think that going faster is better than going slower. This 2892 is completely fast, and it has been fast since the first day of full strings. After the watch had gone for a day, it was almost 10 seconds faster. Then I wore it for another two days, and found that this 2892 was indeed fast. It was already over 10 seconds faster in two or three days. I thought about the feeling of wearing this watch before. It seems that wearing it for a week has basically made a big difference.

Standard version of ETA2892
   Next I wore the old standard 3135. This watch was serviced again after leaving the factory (I remember the year before), so it was readjusted during maintenance. After being full of strings, after walking for a day, the watch went fast, basically 2 or 3 seconds faster. In the next one or two days, the watch continued to go fast, but the travel time was completely within the daily error of + 6 / -4.

Rolex generation classic 3135 movement.

   In the end, I wore the new standard 3135 movement, that is, after 2015, I began to implement the new Rolex standard, a watch of + 2 / -2 seconds per day. Although we often see from the Internet, watch enthusiasts discuss the time of the watch with each other, Rolex + 6 / -4 standard can also achieve an error of 1 second per day. But in real life, none of my previous Rolexes could only achieve such high accuracy. So at first I didn’t have much hope for the new Rolex. Unlike the Rolex I wore in the past, this new standard watch is slower and has never been faster. The first day was 2 seconds slower, and then it was stable for 2 seconds every day. It was really within the standard of + 2 / -2, not bad at all.

Rolex’s next-generation 3235/3255 movement.
   Because I had a Rolex in the Rolex customer service two days ago, I thought of a small problem. Will old Rolex maintain the new standard after maintenance? It turns out that Rolex with + 6 / -4 standard is still + 6 / -4 after maintenance, because after this watch is retrieved, it basically looks like it is 3 or 4 seconds faster every day. It does not reach + 2 / -2 standard. Rolex’s after-sales interpretation of the Rolex travel time standard is that the new standard watch travel time will be among the + 2 / -2 standard, but this is an ideal state, and errors may occur in practice; for the + 6 / -4 standard Watches, after maintenance, travel time accuracy will be improved, will approach the new standard of + 2 / -2. The fact is exactly what he said.

Since 2015, Rolex started with DAY DATE 40 using the new generation 3255 movement. All watches will meet the new top astronomical standard with a daily error of + 2 / -2 seconds.
From the previous comparison, I have two feelings and experiences.

   First, if the watch you choose has an observatory version and a non-observatory version (this situation usually occurs on affordable Swiss watches), choose the observatory standard. Although the observatory version will be more expensive, these efforts are worth it. Because, even from my example above, it can be seen that there is a big difference between the travel time of watches with and without observatory standards. Watches without the Observatory’s certification are normal every 10 seconds or 10 seconds slower, and after wearing them for a few days, you can see directly from the disk that the watch is not allowed to move. I have three particularly outrageous watches (I won’t talk about the brand anymore). Two of them use Japanese movements, and one uses 6497 movements. The characteristic of the Japanese movement is that it goes quickly after lack of power, and can go out for 3 or 4 minutes in a few days. The 6497 is characterized by instability in travel time, but it is basically biased to go fast. Therefore, the watch certified by the observatory is relatively accurate.

Rolex’s new green fire-painted tag.
   Second, in all the watches I have (excluding quartz watches), including those that are not as good as Rolex, the same as Rolex, and higher than the Rolex brand. Rolex is relatively accurate. The most important stability of the watch is that if it is 2 seconds slower, I will slow down by 2 seconds every day. And because Rolex’s travel time is measured after the movement is installed on the watch, so how much error is basically how much error. Like some observatories, the problem of increased errors after the movement is installed will not occur. I think Rolex’s new + 2 / -2 standard is very powerful. Because whether the watch is 2 seconds faster or 2 seconds slower, 30 days a month, even if the error is 2 seconds a day, 30 days is exactly 1 minute. 30 days is the time to adjust the calendar. So while adjusting the calendar, adjust the time by the way. The error calculation is reasonable and scientific.