Nikon DSLR cameras.

Suwa Seiko used a whirlpool logo on their dials, while Daini used a two-triangle and lightning bolt logo

1960 Grand Seiko caliber 3180 was accurate to within +12 to -3 seconds a day and offered a power reserve of 45 hours. It was the first watch in Japan to be compliant with the standard of excellence of the Bureaux Officiels de Contrôle de la Marche des Montres. Suwa Seikosha (now Seiko Epson)

1964 Second gen, 57GS Grand Seiko Self-Dater was introduced. The emphasis was on practicality. It had a calendar function and improved water resistance up to 50 meter

1967 44GS had the highest level of accuracy of any manually wound 5 beat watch in the world. In just a few short years, Grand Seiko had made extraordinary strides towards its goal. Daini Seikosha (now Seiko Instruments), first 'Grand Seiko Style' , (originally King Seiko 44KS, renames as grand seiko)

1967, Grand Seiko unveiled the 62GS, the first automatic Grand Seiko, self winding ,(suwa)

1968,the first automatic 10 beat 61GS (suwa) and the manual 10 beat 45GS. (daini)

1968 , 19GS, first Grand Seiko watch for women with a 10 beat

1969, 61GS V.F.A. suwa, auto hibeat 1969, 45GS V.F.A. daini, manual hibeat with a variation of less than ±2 seconds per day or ±1 minute per month. Having pursued the goal of accuracy to the very limit of what was possible at the time, the Grand Seiko team gave its ultra-high-precision models the "Grand Seiko Very Fine Adjusted" name. The 61GS V.F.A. and the 45GS V.F.A became legends.

1970, 56GS, suwa After accuracy, size reduction was the next challenge for Grand Seiko. This caliber was automatic winding and although just 4.5mm

1970 61GS Special

1972 , 19GS V.F.A., monthly 2 mins. Grand Seiko for Women

In 1988, the first Grand Seiko quartz watch, the 95GS was born. It far exceeded the performance of all regular quartz watches with its accuracy of ±10 seconds per year.