This Swiss-made mens Hamilton Khaki X-Wind Automatic model has a 44mm stainless steel case, with sapphire crystal, set around a black dial with silver subdials, covering a Swiss automatic chronograph movement with day and date functions, mounted with the crown and pushers on the left side of the case for easy access even when wearing gloves. The watch fastens with a thick, stitched brown leather strap with stud details and double tang buckle.The crowns on the right side of the case, as well as the chronograph function, rotating internal bezels and reference chart on the back of the watch are used to calculate the strength of cross winds while flying, allowing you to calculate the drift angle quickly, and adjust accordingly.