Grand Seiko SBGR307

This model is a remarkable blend of efficiency and precision with a power reserve of 72 hours and the accuracy rate of +5 to -3 seconds per day.

With anywhere between 200 and 300 individual parts, Grand Seiko mechanical watches exhibit a near-perfect consistency of functionality in the detail of these parts to ensure the precision of the movement.

Grand Seiko employs Micro Electro Mechanical Systems (MEMS) technology in the manufacturing of its escapements, bringing the mechanical accuracy of its parts to the forefront of technology. Mere parts alone, however, cannot constitute the level of precision for which Grand Seiko is renowned.

The task of assembling Grand Seiko is borne by craftsmen and women who have honed their craft to such an extent that they can adjust parts by hand to tolerances of one hundredth of a millimeter. This extremely detailed craftsmanship is what has made possible the very precise timekeeping delivered by the 9S mechanical movement.

Grand Seiko: the relentless quest for precise timekeeping from the pinnacle of Seiko Watch Corporation’s in-house manufacture. With leading watchmaking, durability and legibility, every Grand Seiko is still handmade in Japan by elite craftsmen and women.