Prospex Alpinist SPB121
The Prospex Alpinist SPB121 by Seiko is a classic design reduced to the essentials. The 39.5 mm stainless steel case houses the Seiko 6R35 calibre (automatic, approx. 70 hrs power reserve). Sapphire glass and 200 m water resistance put the watch into practical perspective; it is worn on a leather strap, day to day and outdoors. Understatement that radiates competence.
All technical data comes from manufacturer information and is checked against manufacturer or retailer pages before inclusion. The editorial rating is our assessment of technology, build quality and value for money in the class, not a lab test. The guide price is based on the recommended retail price; you can always see the current price in the shop. More about how we work →
The Prospex Alpinist SPB121 specs in detail
Movement, case and features decide how a watch performs in everyday life. Here the key data of the Prospex Alpinist SPB121 are gathered clearly in one place, as in the manufacturer's data sheet.
Suits you if...
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Frequently asked questions about the Prospex Alpinist SPB121
Here you will find short, clear answers about the Prospex Alpinist SPB121 by Seiko. The details help you assess size, movement, water resistance and price. That way you can decide more quickly whether the watch suits you.
How big is the Prospex Alpinist SPB121?
The Prospex Alpinist SPB121 measures 39.5 mm in diameter and is 13.2 mm thick. That places the watch in the versatile middle range; what matters is that the lugs do not extend beyond your wrist.
Which movement powers the Prospex Alpinist SPB121?
The Prospex Alpinist SPB121 is powered by the Seiko 6R35 calibre, an automatic with around 70 hours of power reserve. It winds itself via the rotor as you wear it.
Is the Prospex Alpinist SPB121 water resistant?
Prospex Alpinist SPB121 is pressure-tested to 200 m and is therefore suitable for swimming, snorkelling and most dives. The metre rating is a test pressure and not a diving depth.
How much does the Prospex Alpinist SPB121 cost?
Prospex Alpinist SPB121 (ref. SPB121J1 · 39.5 mm) has a guide price of approx. €780.00, based on the recommended retail price. You can find the current price directly at our partner shop Amazon.de.
What occasions is the Prospex Alpinist SPB121 suited to?
Prospex Alpinist SPB121 suits everyday wear, the outdoors and sport in particular. This follows from its classic look, its size and its sapphire crystal and leather strap.
Which watches are similar to the Prospex Alpinist SPB121?
Khaki Field Mechanical by Hamilton, Weekender 38 by Timex and Expedition Scout 40 by Timex go in a similar direction. They share the watch type or a related concept and are worth comparing before you buy.
Related guides
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