Discover More SUR421 39.4mm
SUR421
How it wears
Wears true to its 39.4 mm case size
Seiko Discover More SUR421 39.4mm measures 46.4 mm lug-to-lug on a 39.4 mm case, a lug-to-lug ratio of 1.18 against a database median of 1.18. That span is shorter than 57% of the 7,421 watches in this database and shorter than 44% of the 390 Seiko watches listed.
A flat wrist width of 52 mm (2.05 in) or more keeps it in the balanced range, and from 62 mm (2.44 in) it starts to look compact. Below 46.4 mm (1.83 in) the lugs are likely to overhang the wrist. Flat wrist width is measured straight across the top of the wrist, not around it.
At 7.9 mm thick it is on the slim side, thinner than 95% of the watches with a listed thickness.
Wrist fit analyzer
Fit reference
Sits comfortably within the wrist width for most wearers.
Sources
- https://www.seikowatches.com/kr-ko/products/discovermore/sur421
Manufacturer page: 39.4 mm case, 46.4 mm lug-to-lug, 7.9 mm thickness, and 20 mm lug width.
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