Caliber: El Primero 9004 automatic with Ultraviolet finishingFunctions: Hours, minutes, small seconds, 1/100 second chronograph with chronograph power-reserve display at 12 o'clock, central chronograph hand, 30-minute counter link at three o'clock, 60-second counter at six o'clockPower Reserve: Approximately 50 hoursWinding: AutomaticFrequency: 36,000 vph (5 Hz) for watch; 360,000 vph (50 Hz) for chronographJewels: 53Chronometer Certified: Yes, by TIME LAB