Oris watch artix chronometer this timepiece by oris is a certified chronometer it has received the approval of controle officiel suisse des chronometres cosc the swiss institute that tests chronometers this oris watch is equipped with oris 737 automatic calibre that performs 28 800 vibrations per hour and has 26 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 a date display is positio