Lug-to-lug 52.6 mm 2.07 in
Case 45 mm 1.77 in
Thickness 12.9 mm 0.51 in
Lug width 20 mm 0.79 in
Wrist fit analyzer
Fit reference
Flat wrist width54.1 mmFit ratio0.97
Too smallIdealLargeToo large
Large
Likely to wear near the wrist edge; case shape and strap angle matter.
Sources
- https://www.seikowatches.com/kr-ko/products/prospex/spb125j1
Manufacturer page: 45 mm case, 52.6 mm lug-to-lug, 12.9 mm thickness, and 20 mm lug width.
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