903 903.091

The 903 series is presented in a version that has been technically completely redesigned. Visually recognisable, the navigation chronograph 903 St II B E is available as a standard model with a dark blue dial and has been elevated to an unparalleled technical level. The functionally designed dial imprints the navigation chronograph in our product range with decades of tradition. For example, the slide rule bezel with logarithmic scale can be used to calculate times, distances or fuel consumption. Of particular note is the use of hybrid ceramic luminous elements in the indices, which are meticulously attached by hand, the number 12 and the hour and minute hands. By integrating the illuminating pigments into the respective hybrid ceramic moulded part, a high concentration of illuminant is achieved, resulting in extreme light intensity and perfect readability in the dark.   However, the redesign of the case of the 903 St II B E in particular once again demonstrates our company's high leve...

Source: Sinn website, last updated Mar 2026