A LOOK INSIDE GRAND SEIKO’S 9S

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A LOOK INSIDE GRAND SEIKO’S 9S

Post by koimaster » February 16th 2020, 1:39am

High-beat movements, or calibers that run at 36,000 beats-per-hour/10 beats-per-second, are relatively uncommon in the industry today. The prevailing standard for quite some time now has been 28,800 beats-per-hour, or 8 beats-per-second, and it’s for good reason. These movements strike an excellent compromise as far as overall performance is concerned, with 28,800bph calibers being capable of excellent timekeeping without undue wear and tear on components.


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