Jaeger-LeCoultre Master Ultra Thin Perpetual

About This Watch

The Jaeger-LeCoultre Master Ultra Thin Perpetual is perhaps the most remarkable watch in JLC's entire lineup — a perpetual calendar with moon phase in a case just 9.2mm thick and 39mm in diameter. No other manufacture achieves this combination of complication and thinness at this price point. The perpetual calendar is one of horology's most revered complications, automatically accounting for different month lengths and leap years, requiring no date correction until the year 2100. JLC has achieved this within the ultra-thin Master case through extraordinary movement engineering in the caliber 868. The silver dial organizes the perpetual calendar indications with characteristic JLC clarity: day and month in apertures at the top, date via a central pointer, and the moon phase at six o'clock. The 39mm case in stainless steel makes this a perpetual calendar that can be worn daily without pretension — a dramatic contrast to the oversized gold cases that typically house this complication. At under $18,000 for a manufacture perpetual calendar, this watch offers a value proposition that is almost without equal in Swiss watchmaking. It is the watch that seasoned collectors consistently recommend as the best perpetual calendar relative to its asking price.