IWC Schaffhausen Da Vinci Perpetual Calendar Chronograph

The IWC Da Vinci Perpetual Calendar Chronograph, reference IW392101, is a chronograph with a 43 mm case in 18-carat 5N gold. The watch has a perpetual calendar; the case has a thickness of 15.7 mm. Self-winding calibre 89630 has a 68-hour power reserve, 51 jewels and 399 components. The silver dial has a day and date display, small hacking seconds, a moon phase display and a flyback function beneath arched-edge sapphire glass with antireflective coating on both sides. A dark brown alligator leather strap by Santoni is on the watch. A water-resistance rating of 30 metres applies to the case. The movement runs at 28,800 vibrations per hour.