Hamilton watch khaki aviation chrono worldtimer the hamilton aviation chrono worldtimer from the sensation khaki collection provides a rugged construction with a timeless style as a globetrotters companion this hamilton watch allows the wearer to enjoy telling the time across the globes 24 major cities the design of the hamilton khaki aviation chrono worldtimer was created in collaboration with aerobatic pilot nicholas ivanoff like so many hamilton watches built for aviation the timepiece