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Seiko Prospex Alpinist
$503Historical price (2021-10-25)Stock unknown
Case
- Diameter
- 38mm
- Thickness
- 12.9mm
- Lug-to-lug
- 46mm
- Material
- Stainless Steel
- Water resistance
- 200m
Crystal & dial
- Crystal
- Sapphire
- Lume
- LumiBrite
Movement
- Caliber
- Seiko 6R35
- Type
- Automatic
- Power reserve
- 70h
- Complications
- Date
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.
The market
Market prices.
Historical price (2021-10-25)$503
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Seiko on the secondhand market
+8.1%
2026 so far · +3.7% to +12.7% · 80 matched watches
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In a nutshell
The Seiko Prospex Alpinist is an automatic watch, with a 38mm stainless steel case, 12.9mm thick, powered by the Seiko 6R35 movement and a 70-hour power reserve. Water resistance is rated to 200m, under a sapphire crystal, with date complications. Historical price (2021-10-25): $503. This is a historical reference price, not a current offer or a claimed original list price.
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