
This 2016 automatic column-wheel chronograph is a luxury iteration of the 9904 designed for gold and platinum timepieces, featuring a moonphase display at 6:00 and a date subdial at 9:00. It offers 15,000-gauss magnetic resistance, a silicon SI14 balance spring, a free sprung balance, a 3-level co-axial escapement, and dual serial barrels for a 60-hour power reserve.