These were "behind the scene" videos recorded by Anthony DeMarco.

2% of all watches are randomly pulled out of production and tested in various manners for 500 hours to simulate 5 years of wear.

The protocol is probably not as complete as the Qualite Fleurier's Chronofiable test or the JLC Master Control test but the testing is performed for ALL the models produced out of the Le Locle facility...not just the limited editions.

I am sure results are available for testing > 500 hours...I hope so because 500 hours over 5 years is probably what a collector puts a Montblanc watch through when it is worn in rotation.  If a owner wears his/her Montblanc watch daily for 8 hours, then the testing period would only simulate 2 months of ownership (thankfully Montblanc offers a 2 year warrenty which is double the industry standard )

Here is a video of a test which simulate the stress of daily wear

Here is a "drop test"

Even the straps are put through strain testing

Enjoy and HAGWE,

Mike