L687.2 VS L687.5:
There is a notable evolution in the calibre L687 with some important differences.
- L687.2 – Regular balance spring, ETACHRON regulator, Incabloc or Nivachoc anti-shock, 54 hours power reserve
- L687.5 – Silicon balance spring, free-sprung balance wheel, Nivachoc anti-shock, 66 hours power reserve
At the time of this caliber listing, the current variation is the L687.5 as seen in the image at the top of the page.
