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Cartier

Maybe

 

It depends on your definition of 'reliable'. Structural or Functional?

Any mechanism can keep perfect time accuracy and precision until the moment of total failure.
Any mechanism can lose time accuracy or precision over time but never fail completely.

All new designs have proving tests during R&D and continual tests during production and returns for normal servicing. Experience data continues to be collected and analysed by service centres for the lifetime of active production.

Since the 1904MC has been in active service for less than 3 years, only Cartier has the service records and return rates data , to make a conclusion.

Objectively, we receive very few adverse reports....actually none yet....about the reliability of this movement.
 
Regards, 
MTF


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