Grand seiko watch mechanical hi beat sbgh035 if you are looking for a timepiece that features extreme craftsmanship and accuracy the watch is equipped with 9s85 calibre that performs 36 000 vibrations per hour and has 37 bearing jewels grand seiko is mechanical automatic it comes with a hand winding option the movement features a 55 hour power reserve it is protected from water penetration and magnetic influences a date window is positioned at the 3 o clock mark additional functionalitie