Montblanc

About 6 months ago, Montblanc announced that they were expanding the 500 hour Quality Certification process to ALL Rieussec chronographs. Now, we are told that each example of the new Heritage Perpetual will also be subjected to this testing protocol and ...  

Hi, Did Montblanc mention their acceptable margins of performance for watches undergoing the test? Is it something like the ISO3159 or COSC guideline? Best, Tim

80 hours – accuracy in all positions; -6.0 to +4.0 required (COSC standard). 336 hours – "Cyclotest" (14 continuous days); simulates real-life wear including wrist motions and laying overnight. For chronographs, two cycles are run; one with chrono running... 

Thanks for sharing Mike! When you said that Montblanc expanded the testing to all Rieussec models 6 months ago, which ones were they previously untesting? Were they only testing handwind models and not the automatics or something like that? THanks.

process that only checked 2% of the Rieussecs which were selected randomly. Best, Mike

Gotcha! Thanks for the clarification :)

that a manufacture is doing these comprehensive tests and issuing a certificate to confirm that. I appreciate JLC for the same. I initially thought Montblanc will only do these tests on their LeLocle manufactured movements (Timewalker Twinfly and Rieussec...