Grand Seiko 60th Anniversary Limited Editions. The women’s automatic watch is powered by Caliber 9S27, an automatic movement specifically designed for Grand Seiko’s women’s collection. It delivers a perfect balance of precision (+8 to -3 seconds a day),power reserve (50 hours) and slimness. It has a mother of pearl dial in, of course, Grand Seiko blue and has diamonds as hour markers and which is framed on its bezel with 45 diamonds. After all, it is a diamond anniversary.