Doesn't this have the disposable Powermatic 80 movement with the plastic escapement?
It's the caliber H-10 with silicone mainspring. What's your point? Aren't most movements inherently disposable and replaceable?
The H-10 (ETA C07.611) has a standard jeweled escapement and a standard metal mainspring.
Nobody uses silicon for the mainspring. There are some movements with silicon balance springs, including a version of the Powermatic 80, but the H-10 doesn't have one. Current versions use Nivachron for the balance spring which is antimagnetic, but still a metal alloy.
And none of them are disposable. They are all fully serviceable, including the "plastic escapement" version.