The cult of precision in a model of great finesse. These are the watchwords that characterize the Master Ultra Thin Date watch in pink gold, revisited in a slender new case of just 39 millimeters in size (7.8 mm). Subtly longer, finer hour-markers align on its eggshell dial. In an aperture at 6 o'clock, a new window displays the date. At the heart of the Master Ultra Thin Date, a mechanical self-winding movement of utmost precision, the Jaeger-LeCoultre Caliber 899/1.