Audemars Piguet Perpetual Calendar

Audemars Piguet's Royal Oak Perpetual Calendar 26574TI.OO.1220TI.01 measures 41 mm across in titanium. The case stands 9.5 mm thick and pairs with a matching titanium bracelet on an AP folding clasp. A sapphire crystal covers the blue Grande Tapisserie dial. The self-winding calibre 5134 drives the perpetual calendar, tracking date, weekday and month alongside a moon phase display that also accounts for leap years. Titanium keeps the weight down without altering the case's proportions. This is a perpetual calendar watch built for daily wear rather than display-case treatment. Water resistance sits at 50 metres, modest but typical for the complication.