Gent's Stainless Steel 46mm Jaeger LeCoultre Master Compressor Extreme World Chronograph Item #: CT45303 Brand: Jaeger LeCoultre Model: Master Compressor "Extreme World" Reference No: Q1768470 / 150.8.22 Gender: Gent’s Movement: Handmade Swiss Automatic Movement(Caliber JLC 752) Case Measurements: Case Diameter: 46mm Case Thickness: 15.5mm Dial: Jet Black Markers: Luminescent Arabic Numerals and Hour Markers Bracelet / Strap: Jaeger LeCoultre Black Rubber Strap with Quick Release Advance System and Stainless Steel Tang Buckle Features: Luminescent Hands, Arabic Numerals and Hour Markers, Subdial Seconds Hand, Date Indicator. Stainless Steel Smooth Fixed Bezel, 24-Time Zone World Time System, Chronograph Functions, Center Sweep Chronograph Seconds Hand, Sapphire Crystal.