903 St

The navigation chronograph.

Special characteristics
  • Case made of stainless steel, polished / satinized
  • Column wheel chronograph, exquisitley decorated
  • Sapphire crystal glass
  • Transparent case back made of sapphire crystal glass
  • Black and silver electroplated dial
  • Interior bezel with logarithmic scale and slide rule function
  • Pressure-resistant to 10 bar
  • Low pressure resistant


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Description Technical details