Jaeger LeCoultre, Master Series, Model: Q1368420, automatic mechanical, case: stainless steel, diameter 39mm, thickness only 9.3mm, ultra-thin dress size, suitable for 15-18cm wrists Dial: Silver-white radial dial, three-dimensional triangular hour markers, blue steel hour, minute and second hands Movement: Jaeger-lecoultre Cal.925 / 1 automatic ultra-thin movement, 22 gemstone bearings, 43-hour power reserve, frequency 28,800 VPH, is the brand's signature ultra-thin automatic movement