Reference 5905\/1A-001 reinterprets a classic complication through a contemporary lens. The 42mm steel case and integrated three-link steel bracelet introduce a sport-inflected stance uncommon for this level of watchmaking. Its sunburst olive-green dial organizes day, date, and month in apertures along the upper arc for rapid reading. A mono-counter at six tracks both chronograph minutes and a 24-hour cycle, while also housing an integrated day-night indicator. Visible through the sapphire caseback, the self-winding CH 28-520 QA 24H movement reveals its column-wheel system and hand-finished bridges.
eBay