Illustration. The seconds hand sweeps, like the real movement.
Why it's interesting
The Alpinist's forest-green dial, gilt cathedral hands and internal compass ring have made it Seiko's most recognisable non-diver, and the 2025 update keeps all of that while adding a three-day movement and a slightly slimmer case. The rare watch that feels equally right on a trail and at a dinner table.
Watch DNA. Filled tags are editorial; outlined tags come from the specifications.
The numbers
Verified specificationsSize
- Diameter
- 39.5mm
- Lug to lug
- 46.4mm
- Thickness
- 12.7mm
- Lug width
- 20mm
Because you like this…
Chosen for shape, size, colour, character and price. Rarely the same brand twice.
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About this page
Verified specifications, checked September 2026
Dimensions, water resistance, movement and crystal were checked against the sources below.
Current successor to the SPB121. Compass ring is internal (operated by the 4 o'clock crown); drawn as a compass bezel.
The illustration is a bezelga rendering generated from the specifications. It is not a photograph and may simplify details such as logos, text and finishing.
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