Jaeger-LeCoultre Q1758170 Master Compressor Chronograph, 175.81.70, Stainless Steel on a Stainless Steel Bracelet, Automatic Movement, Chronograph, 30 minute sub-dial, Hour sub-dial at 9 Oclock (Disc rotates instead of the hand), Date and Small Seconds at 6 Oclock, Black Dial with Luminescent Hands and Hour Indicators, Size 41.5 mm, Thickness 14mm, Sapphire Crystal, Water Resistant to 10 atm., Like New with Box and Papers.