Oris watch artelier worldtimer oris artelier worldtimer combines classic design with intriguing modern complications the timepiece is equipped with oris 690 automatic calibre a modification of eta 2836 2 the movement performs 28 800 vibrations per hour and has 30 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 the watch displays information about two time zones with the subsidiary dial