This watch for aviators is exceptionally readable it comes with simple and very stylish design oris bc4 small second date is equipped with oris 643 a modification of eta 2836 2 the movement performs 28 800 vibrations per hour and has 27 bearing jewels a 38 hour power reserve is available for the convenience of the wearer hands and indices are luminous for improved night time visibility subsidiary seconds appear at 9 oclock the date display is located at 3 oclock additional useful feat