Jaeger-LeCoultre Master Ultra Thin Q1232510 39 mm

The Master Ultra Thin Q1232510 gives a 39 mm rose-gold case a particularly fine 7.8 mm thickness. Its beige dial presents the hours, minutes and seconds with a date, keeping the display focused while the pin buckle and see-through caseback reinforce the traditional character of the collection. The case is rated to 50 metres, and the slender proportions allow the warmth of the rose gold to remain the dominant visual note.

Calibre 899 is an in-house automatic movement with a 70-hour reserve, 218 parts and 32 jewels. The 4 Hz movement uses a single barrel and silicon escapement, with a fine finish visible through the display back. Its functions cover the date, hours, minutes and seconds. Jaeger-LeCoultre's 1000 Hours Control tests the cased watch, adding a defined testing detail to this otherwise pared-back reference.