Jaeger-LeCoultre Master Compressor Extreme World Alarm Q1778470, Reference: 177.84.70, Stainless Steel on a Strap with a Stainless Steel Deployant Buckle, Automatic Movement (JLC Caliber 912), 24 Different World Times Surrounds the Dial with Red and White Hour Ring (World Time is Adjusted Using the Red Crown Located at the 10 O'clock Position), Alarm Function (Set by the Crown at the 1 O'clock Position, Date at 3 O'Clock, Bi-Directional Rotating Disc on Dial, Centered Sweep Second Hand, Black Dial with Luminous Hands and Hour Indicators, Size 46.3 mm, Thickness 16.5 mm, Sapphire Crystal, Water Resistant to 100 Meters, Comes with an Easily Interchangeable Extra Black Rubber Strap, Mint with Box and Papers