3 Answers

It seems to be .7mm from Google research.  Good luck, keep it running...

Lederer says this tudor pelagos ultra is the first time that dueling constant-force remontoires have been associated with dual chronometric gear trains. In the Central Impulse Chronometer, they operate every 10 seconds, one after another, link so that a remontoire is delivering energy every five seconds. Being a constant-force mechanism, the remontoire provides even torque distribution to the escape wheel, which then provides a direct impulse link to the balance.

The real albeit subtle win for vintage fans is link the fact that the dial is double-signed with both the link Minerva and Montblanc logos. This is only the second time the Minerva arrow logo has returned link on a modern Montblanc watch. The watches are currently being produced and will be delivered in December. This new vintage-inspired Montblanc will run you 34500.