• LeCoultre, Master, Model: Q1548420, Automatic mechanical, stainless steel, case diameter: 39MM • Brand: Jaeger-LeCoultre (a top Swiss watch brand, part of Richemont Group) • Series: Master Ultra Thin (Benchmark Series for Dress Watches) Model: Q1238480 (Stainless steel version) • Diameter: 39mm (Gold size for dress watches, suitable for most men's wrists) • Case: Made of stainless steel, polished bezel, brushed side of the case, dial and appearance details Dial: Silver-white radiating dial, 12 / 6 / 9 Arabic numeral hour markers, and the rest of the points are three-dimensional triangular hour markers with luminous dots. Blue steel hands in the style of Princess Consort, with a windowed date display at the 3 o 'clock position. Strap: Black cowhide stitched leather strap, original factory with folding clasp; The crown is equipped with anti-slip vertical stripes for easy adjustment of the time and calendar. Thickness: 7.89mm ultra-thin body, which can be easily tucked into the sleeve of a shirt, is the core advantage of dress watches. Movement configuration 💡 Equipped with the Cal.899 automatic winding movement, Jaeger-lecoultre original in-house polished movement: The movement is decorated with Geneva waves, blue steel screws and fish-scale automatic rotor patterns. The power reserve is 38 hours, which is sufficient for daily commuting. Water-resistant to 50 meters, it is suitable for daily hand washing and rain exposure, but not for swimming or diving.