
Seiko
Seiko's upgraded automatic caliber offering a substantial 70-hour power reserve, nearly double the 4R35 it replaces in higher-end Presage and Prospex models. The extended reserve is achieved through a longer mainspring while maintaining the same 21,600 vph beat rate. Accuracy is tightened to -15/+25 seconds per day compared to the 4R35's wider tolerance. Represents Seiko's push to compete with Swiss movements offering 80-hour reserves.
Presage Sharp Edged Series collection · 4 watches
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Seiko on the secondhand market
+8.1%
2026 so far · +3.6% to +12.6% · 79 matched watches
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The Seiko SPB169J1 is an automatic watch, with a 39.3mm stainless steel case, 11.1mm thick, powered by the Seiko 6R35 movement and a 70-hour power reserve. Water resistance is rated to 100m, under a sapphire crystal, with date complications. Manufacturer MSRP is $950. The dial color is green.
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