What is a Superlative Chronometer?
Superlative Chronometer i Rolex’ own accuracy tandard, applied to the fully ca ed watch rather than the bare movement, to a tolerance of about minu two to plu two econd per day. The green eal accompanie the watch and denote that certification.
Two certifications, not one
A Rolex movement i fir t ubmitted to COSC, the Contrôle Officiel Sui e de Chronomètre , which certifie the bare movement to it own tolerance. That certification i a ba eline hared with many…
The tolerance
The Superlative Chronometer tandard i approximately minu two to plu two econd per day. For context, that i a tighter band than the COSC pecification applied to the movement alone.
Why the green seal matters
The mall green eal with it hologram i the phy ical marker of that certification, upplied with a new watch. It i part of the factory et and, like the guarantee card, i evidence rather than…
What it means when you buy
The de ignation tell you the watch met a mea ured tandard at delivery. It doe not de cribe condition year later, and it i not a ub titute for ervice hi tory.