Calibre 90M and its triple-register variant, the 95M. Developed in 1936 in collaboration with Louis-Elisée Piguet, the 90M calibre was launched two years later in 1938 (1939 for the 95M). The Movado 90M functions in the opposite way to the great majority of chronographs; the start/stop pusher is at 4 o’clock, while the one used to reset the chronograph is at 2.