Ebel Caliber 288. Chronometer certified by the COSC before and after assembly of the QP module. Functions: Hours, minutes, small seconds and 7 day counter at 9 o'clock. Chronograph: hour and astronomical moon counter at 6 o'clock, chronograph minute and 31 day counter at 3 o'clock, 48 months and year at 12 o'clock, Chronograph seconds in the center. Shuttle chronograph mechanism. Date Module: Perpetual calendar, semi-instantaneous action date. Fast date correction. 26 rubies and 1 zirconia, 436 components. Diameter: 31.00 mm. Thickness: 8.00 mm. 28,800 vibrations per hour (4 Hz). Automatic winding, bidirectional. Power reserve of 48 hours.