SpecStudio
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Seiko SNXS79
Ref. SNXS79J1
Stock unknown
Case
- Diameter
- 37mm
- Thickness
- 12mm
- Lug-to-lug
- 43mm
- Material
- Stainless Steel
- Finish
- Brushed and Polished
- Water resistance
- 30m
- Caseback
- Solid
Crystal & dial
- Crystal
- Hardlex
- Shape
- Flat
- Dial colour
- Grey
- Indices
- Applied
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.
The market
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Retail stock & market context
Seiko on the secondhand market
+8.1%
2026 so far · +3.6% to +12.7% · 80 matched watches
In line with the index
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In a nutshell
The Seiko SNXS79 (ref. SNXS79J1) is an automatic watch, with a 37mm stainless steel case, 12mm thick, powered by the Seiko 7S26 movement and a 40-hour power reserve. Water resistance is rated to 30m, under a hardlex crystal.
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