REFERENCE : 03.3100.3600/69.M3100
 
El Primero導柱輪自動計時機芯，可測量和顯示1/10秒 1/10秒顯示位於陶瓷錶圈、動力儲存增加為60小時 日期顯示位於4時半位置、停秒機械裝置。
 
Automatic El Primero column-wheel chronograph able to measure and display 1/10th of a second 1/10th of a second indication on the ceramic bezel. Increased power reserve of 60 hours Date indication at 4:30 Stop-second mechanism.