IW5022-18

The IWC Portuguese Perpetual Calendar IW5022-18 "IW502218" is a 42mm men's automatic watch with a white gold case and a black analog dial protected by sapphire crystal. It uses a 51613 caliber self-winding mechanical movement that can be manually wound and hacked (the second hand stops when the crown is pulled out). It ticks 6 times per second which gives the second hand a smoother movement than a quartz watch which ticks once per second. The watch should run for up to 7 days when fully wound and will self-wind when moved.