Stainless steel self-winding tonneau-shaped gentleman’s wristwatch water-resistant with screwed case-back winding crown protected by the crown guards black colour dial with subsidiary seconds at 3 and four horological complications: • 1/8 second chronograph (activated by the two rectangular push-pieces) with tachometric scale graduated on the 18K yellow gold bezel for 500 units per hour • 30-minute recorder (subsidiary dial at 9 o’clock) • 12-hour recorder (subsidiary dial at 6 o’clock) • Date of the month (aperture at 4:30).