The Khaki Aviation X-Wind Automatic watch is the world's first drift angle calculator built into a watch, functionality that allows the pilot to accurately calculate and record crosswinds during their journey. And for those who need to find the direction of their life on land, this Hamilton watch is the perfect co-pilot. The solid and elegant style of this innovative chronograph will undoubtedly become the object of attention, not to mention its functionality and precision that will guarantee a serene and smooth flight. Hamilton watch with automatic movement. Caliber: H-21. Chronograph 44mm diameter stainless steel case with sapphire crystal, open case back and black dial. 22mm brown leather strap. Window for the calendar at 9am.