A timepiece that is full of character, this Hamilton Khaki Aviation Pilot Pioneer has a distinctive aesthetic. A sporty yet refined design, inspired by the Model 23, a cutting-edge pocket watch used by the US military during WWII, that is ready to fly. At A Glance  Presented on a brown calf leather strap with pin buckle 43mm bronze and titanium case with a water resistance of 100m Black textured dial with ultra-legible numerals Cathedral style hands Sapphire crystal glass Powered by a mechanical movement 50-hour power reserve