X-Treme Tourbillon Rainbow Roman Blue

  • Caliber GT Grand Prix
  • Tourbillon movement/li>
  • Power Reserve indication
  • Retrograde date (RD)
  • Twin Barrel
  • Manualwinding
  • 37 Jewels
  • Autonomy 120 h
  • Frequency 4 Hz (28’800 Alt/h)