
Ref. SPB249J1 · Diver
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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.
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Prospex collection · 10 watches









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Seiko on the secondhand market
+10.1%
2026 so far · +5.2% to +17.0% · 103 matched watches
In line with the index
Divers as a group: +6.1% · 368 matched watches
Year-by-year readings →The Seiko Prospex Land 1959 Alpinist is praised for its comfortable, compact 38mm size and nicely finished case with a blend of brushed and polished surfaces, along with its wearable design and adventurous heritage. Owners appreciate its cream dial and green strap combination, finding it durable enough for daily wear and considering it the best-looking Alpinist variant. The 6R35 automatic movement offers a 70-hour power reserve, though Seiko's stated large tolerances for its movements are noted. Some reviewers criticize the inclusion of a date window and the absence of the "Alpinist" name on the dial, with one owner finding the date window unseeable once noticed. Accuracy is stated as -15/+25 seconds per day. Overall, owners and reviewers rate the Seiko Prospex Land 1959 Alpinist highly for its comfortable wearability and attractive vintage-inspired design.
On real wrists · 17
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