In 1969, resisting the tide of change that was the quartz movement (the first-ever quartz prototypes were presented to the ...

Grand Seiko has launched a new Spring Drive movement that’s accurate to within 20 seconds per year The revolutionary hybrid engine debuts in two striking new models One of the models, SLGB003, also ...

Today‭, ‬the spirit of those legendary timekeepers is reincarnated in Grand Seiko’s most audacious movement yet‭: ‬the Spring Drive Caliber 9RB2‭, ‬also known as UFA‭ (‬Ultra ...

Grand Seiko unveils the Tentagraph and Spring Drive U.F.A. at Watches and Wonders 2025 From its bold new chronograph to the most precise mainspring-powered movement ever, Grand Seiko enters a new ...

Grand Seiko ushers in a new era of Ultra Fine Accuracy with the SLGB003, powered by the revolutionary Spring Drive Caliber 9RB2 Published: Fri 16 May 2025, 5:26 PM Updated: Mon 2 Jun 2025, 6:13 PM By: ...

Previous Spring Drive movements have topped out with an accuracy rating of +/-15 seconds per month, which easily bests the most precise mechanical watches. But Grand Seiko wasn’t satisfied.