American Classic Intra-matic Chronograph H Mechanical | 40mm | H38429541 3mm x 50 The Khaki X-Wind features the

The Khaki X-Wind features the first ever drift angle calculator to appear in a watch and helps pilots accurately calculate how crosswinds will affect their journey

Silver with yellow gold vermeil

Crystal:                      Sapphire crystal with anti-reflective coating

triangular case

American Classic Intra-matic Chronograph H Mechanical | 40mm | H38429541 3mm x 50 The Khaki X-Wind features theCaliberH 51 CollectionAmerican Classic MovementMechanical Watch FunctionChronograph Case size40mm Thickness (mm)14. 35 Dial colorBlue Case materialStainless steel CrystalSapphire Lug width20mm Power reserve60 hour StatusCurrent collection Water Resistance10 bar (100m) Anti ReflectionYes NivachronYes Super LuminovaYes