IWC Schaffhausen Ingenieur Perpetual Calendar 41

The IWC Ingenieur Perpetual Calendar 41, reference IW344903, has a 41.6 mm steel case. The watch has a perpetual calendar; the 13.3 mm thick case has a screw-down crown. Calibre 82600 is self-winding and has a 60-hour power reserve and 46 jewels. Behind convex sapphire glass, the blue dial has a day and date display and a moon phase display. A steel bracelet is on the watch. The case carries a water-resistance rating of 100 metres. A see-through case back displays the movement. The movement uses the Pellaton automatic winding system.