The IWC Pilot’s Watch Mark XX Green Dial 40mm (Ref. IW328205) continues the Mark series’ utilitarian tool watch lineage through IWC-manufactured Calibre 32111 with an exceptional 120-hour power reserve, five full days of operation without winding that makes this genuinely practical for travellers and those who rotate between multiple watches. The green dial with large Arabic numerals maintains the Mark series’ defining legibility philosophy whilst the glass secured against displacement by drop in air pressure confirms authentic aviation instrument thinking.

At 40mm with 10.8mm height through stainless steel construction, this provides classic pilot’s watch proportions that wear comfortably on a broad range of wrist sizes without the bulk of larger contemporary sports watches. The convex sapphire crystal with anti-reflective coating on both sides ensures optimal cockpit visibility whilst the screwed-in crown and 100m water resistance provide practical daily durability beyond aviation applications.

The IWC Manufacture Calibre 32111 delivers the exceptional 120-hour power reserve through 163-component automatic construction with 21 jewels operating at 28,800 vibrations per hour with central hacking seconds for precise time setting. Being IWC-manufactured rather than based on an ebauche represents a meaningful distinction at this price point, giving the Mark XX greater calibre credibility than its predecessors.

The brown calfskin strap with contrasting stitching and IWC EasX-CHANGE system enables rapid tool-free strap changes for versatile presentation whilst the date display provides practical everyday functionality. The 20mm strap width ensures broad compatibility with alternative strap options through the EasX-CHANGE system.