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Home/Browse/Seiko/SNKP21J1
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Seiko SNKP21J1
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Seiko · SNKP21J1

Seiko SNKP21J1

$191Sold out

33 matched eBay listings

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Case

Diameter
42mm
Material
Stainless Steel
Water resistance
50m

Crystal & dial

Crystal
Hardlex

Movement

Caliber
Seiko 7S26
Type
Automatic
Power reserve
41h

Seiko

Seiko's legendary budget automatic caliber that powered the original Seiko 5 line and SKX diver series for decades. Lacking hacking and hand-winding, it is mechanically simple with just 21 jewels, but this simplicity contributed to its remarkable durability and low maintenance requirements. Now discontinued in favor of the NH35/4R35, the 7S26 remains one of the most iconic and beloved movements in affordable horology.

Alternatives

Market

Retail$191

The forum market

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Active listings0Across watch forums
Closed · 90d0Asking-price history

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Retail stock & market context

Seiko on the secondhand market

+10.3%

2026 so far · +6.0% to +16.9% · 91 matched watches

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Summary

The Seiko SNKP21J1 is an automatic watch, with a 42mm stainless steel case, powered by the Seiko 7S26 movement and a 41-hour power reserve. Water resistance is rated to 50m, under a hardlex crystal. Manufacturer MSRP is $191.

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