Prospex Seiko Diver’s Watch 60th Anniversary Limited Edition 42mm
SPB509
How it wears
Wears true to its 42 mm case size
Seiko Prospex Seiko Diver’s Watch 60th Anniversary Limited Edition 42mm measures 48.6 mm lug-to-lug on a 42 mm case, a lug-to-lug ratio of 1.16 against a database median of 1.18. That span is longer than 72% of the 7,421 watches in this database and longer than 80% of the 390 Seiko watches listed.
A flat wrist width of 54 mm (2.13 in) or more keeps it in the balanced range, and from 65 mm (2.56 in) it starts to look compact. Below 48.6 mm (1.91 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 13.3 mm thick it sits within the typical range, thicker than 69% 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/prospex/spb509j1
Manufacturer page: 42 mm case, 48.6 mm lug-to-lug, 13.3 mm thickness, and 20 mm lug width.
- https://monochrome-watches.com/seiko-prospex-divers-king-samurai-srpe37k1-srpe35k1-hands-on-price/
MONOCHROME reports 48.7mm lug-to-lug, 43.8mm case size/width for Seiko Prospex Seiko Diver’s Watch 60th Anniversary Limited Edition in “The Seiko Prospex Diver’s King Samurai SRPE35K1 & SRPE37K1.”
- https://monochrome-watches.com/seiko-prospex-1968-heritage-diver-gmt-60th-anniversary-spb509-300m-review-price/
MONOCHROME reports 48.6mm lug-to-lug, 42mm case size/width for Seiko Prospex Seiko Diver’s Watch 60th Anniversary Limited Edition in “The new Seiko Prospex 1968 Heritage Diver GMT 60th Anniversary SPB509.”
- https://monochrome-watches.com/seiko-prospex-1968-heritage-diver-gmt-300m-spb519-micro-adjust-clasp-introducing-price/
MONOCHROME reports 49mm lug-to-lug, 42mm case size/width for Seiko Prospex Seiko Diver’s Watch 60th Anniversary Limited Edition in “Seiko Upgrades its Prospex Diver GMT with more WR and a Micro-Adjust Clasp.” The article's explicit planar case length/top-to-bottom dimension is stored as the lug-to-lug equivalent.
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