Mechanical movement, Automatic winding, Caliber 51110, Seven days’ continuous running, Power reserve display, Beryllium alloy balance with high-precision adjustment cam on the balance bars, Brequet spring, Date display, Central seconds with stop function, Screw-in crown, Soft-iron inner case for protection against magnetic fields, Sapphire glass, antireflective on both sides and secured against displacement by drop in air pressure, Water-resistant to 60 m