JAEGER LECOULTRE Master Control Series .With a case diameter of 41MM, the streamlined stainless steel case provides robust protection. The logo on the crown is clearly embossed and powerful.The dial layout is simple yet sophisticated.Featuring a transparent case back, the movement is maximally restored to its original condition, utilizing an imported 9015 movement modification for unmatched precision. The stainless steel case and back cover are secured by four flat head screws. The Jaeger LeCoultre logo and watch number on the back cover are finely engraved. The glass is made of double dome sapphire crystal, minimizing the thickness of the watch and enhancing movement stability.Crafted from 904L stainless steel, the watch displays exquisite craftsmanship and meticulous polishing.