[RABAUKE]

Originally Posted by JamesWWIII

Since 2016, all Rolex watches are actually held to a higher standard than COSC, with -2/+2 second per day variability which they label "Superlative Chronometer".

https://www.ablogtowatch.com/rolex-e...n-house-tests/

This is my Seadweller (about 30 years old) and it's labelled Superlative Chronometer. Still gains a few minutes a month and was recently serviced at Rolex Canada.