
Ref. SBGA513
Grand Seiko
Grand Seiko's Spring Drive caliber combines a mechanical mainspring with an electronic regulator to achieve a perfectly smooth gliding seconds hand and accuracy of plus or minus 1 second per day. The Tri-synchro regulator uses the energy of the mainspring to generate electricity that powers the quartz oscillator and IC, eliminating the need for a battery. A 72-hour power reserve and 30 jewels make it one of the most technologically unique movements in horology.
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Heritage collection · 23 watches
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Grand Seiko on the secondhand market
+7.6%
2026 so far · +4.0% to +12.3% · 41 matched watches
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Year-by-year readings →Grand Seiko Thailand Limited Edition: The Final Chapter (Hatsuhinode) owners praise its subtle off-white coloring, linen dial, and tasteful thickness, noting its versatility for everyday and business-casual wear. The watch is also considered the cheapest among its rumored peers. Overall, owners rate Grand Seiko Thailand Limited Edition: The Final Chapter (Hatsuhinode) highly for its blend of elegance and robustness at its price point.
On real wrists · 1
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