To incorporate fusee and chain with tourbillon. My first impression is awe at its minuscule size (38.5mm). So much complication packed into such a small package. It’s always harder to pack complications into smaller wristwatches rather than larger ones. P...
It looks like it might not. The original crystals were not AR-coated. If the crystal is not AR-coated, and if you haven't already considered this, then you might consider having Lange replace it with an AR-coated crystal. It makes a big difference, though...