Grand seiko watch mechanical sbgr057 is elegant and very functional at the same time one of its most peculiar characteristics is the mechanical automatic movement that comes with hand winding capability the calibre is 9s65 and it has 35 bearing jewels grand seiko watches are protected from magnetic fields and water penetration a 72 hour power reserve is available the dial features a date window positioned at the 3 o clock mark additional features include screw crown see through screw cas