The spb013j1 double retrograde automatic watch by seiko ananta is a true piece of jewellery a functional watch that manages to be exceptionally elegant and suitable for official wear this stunning timepiece consists of 224 components it comes with 6r24 automatic calibre that performs 28 800 vibrations per hour and has 31 bearing jewels the available time reserve exceeds 45 hours the retrograde day and date indicator is one of the most notable features of this timepiece additional function