IWC Men's IW500401 Big Pilot Date Watch 42 jewels Automatic movement Black dial with date at the 6 o'clock postion and power reserve Soft iron inner case for protection against magnetic fields. Convex sapphire glass, antireflective on both sides and secured against displacement by drop in air pressure Small hacking seconds hand; 7 day power reserve Water resistant to 165 feet (50 M): suitable for swimming and showering