IWC Big Pilot’S Watch Heritage Watch, 46.2mm Black Dial, IW501005The retro design, taken from the well known Big Pilot's Watch 52 T. S. C., gives this magnificent navigational instrument in bronze a character of its own. The Big Pilots Watch Heritage is inspired by the design of the iconic Big Pilots Watch Calibre 52 T. S. C. Thanks to this, the timepiece with an impressive diameter of 46 millimetres features a striking retro look. A soft iron inner case protects the movement against the effects of magnetic fields.