Pre-owned Patek Philippe model 5905R-001. Features an annual calendar complication, flyback chronograph function including a running seconds counter. Powered by the CH 28-520 QA 24H mechanical movement with hacking seconds. Rose gold case, measuring approximately 42 mm in diameter. Accompanied by a rich brown sunburst dial decorated with radial columns and printed subdials for hours, minutes (including flyback), 30-minute timer, and date indicators. The date aperture is positioned at the 3 o'clock mark. Caliber designation present on the mainplate.