9904

Introduced in 2016, this automatic column-wheel chronograph movement adds a moonphase indicator and date function to the 9300 caliber. It includes a 9:00 date subdial, 15,000-gauss magnetic resistance, a silicon SI14 balance spring, a free sprung balance, a 3-level co-axial escapement, and two series-mounted barrels yielding a 60-hour power reserve.