Self-winding chronograph movement with GMT/second time zone function, column wheel mechanism and Co-Axial Escapement for greater precision, stability and durability of the movement. Silicon balance spring on free sprung-balance, twin barrels mounted in series, automatic winding in both directions to reduce winding time. Central hour, minute and chronograph seconds hands, small seconds and GMT hands, and 12-hour and 60-minute recorders. Rhodium plated finish with Geneva waves in arabesque. “Si14” is engraved on the arm of the balance wheel.