Ingenieur Officially Certified Chronometer 3521 — Steel and Gold

Identifying details

• Date

  Date display.

• Cyclops

  Magnifying lens over the date.

• Five-hole bezelBezelThe frame surrounding the crystal at the front of a watch.

  Round screwed bezelBezelThe frame surrounding the crystal at the front of a watch. with five recesses for the opening tool (Genta-era Ingenieur).

• Soft-iron inner case

  Soft-iron inner case and dial forming a cage that shields the movementThe working mechanism inside a watch or clock. from magnetic fields.