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Seiko SNK803
Ref. SNK803K2
Stock unknown
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Case
- Diameter
- 37mm
- Lug width
- 18mm
- Material
- Stainless Steel
- Finish
- Brushed
- Water resistance
- 30m
- Caseback
- Exhibition
Crystal & dial
- Crystal
- Hardlex
- Shape
- Flat
- Dial color
- Tan
- Indices
- Arabic numerals
Movement
- Caliber
- Seiko 7S26
- Type
- Automatic
- Beat rate
- 21,600 vph
- Power reserve
- 40h
- Jewels
- 21
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.
Seiko 5 collection · 13 watches
Market
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Retail stock & market context
Seiko on the secondhand market
+10.1%
2026 so far · +5.2% to +17.0% · 103 matched watches
In line with the index
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Community
Owners widely praise the Seiko SNK803 for its exceptional value, practical versatility, and classic field watch aesthetics, with many considering it a well-made, good-looking, and solid workhorse. Some owners find the 37mm case a bit small, while others appreciate its wearability and how it looks better in person than in photos. One owner reported reliability and accuracy issues with their specific piece. Overall, owners rate the Seiko SNK803 highly for its outstanding value and classic field watch design.
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