Prospex 1965 Heritage Diver's Watch 40mm
SPB451
How it wears
Wears true to its 40 mm case size
Seiko Prospex 1965 Heritage Diver's Watch 40mm measures 46.4 mm lug-to-lug on a 40 mm case, a lug-to-lug ratio of 1.16 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 13 mm thick it sits within the typical range, thicker than 62% 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/spb451j1
Manufacturer page: 40 mm case, 46.4 mm lug-to-lug, 13 mm thickness, and 20 mm lug width.
- https://www.hodinkee.com/articles/the-next-generation-of-seikos-prospex-20mas-now-smaller-and-with-a-new-movement-spb453-spb451-and-sp
Hodinkee reports 46.4mm lug-to-lug, 40mm case size/width, 13mm thickness for Seiko Prospex 1965 Heritage Diver in “Introducing: The Next Generation Of Seiko's Prospex '20MAS' – Now Smaller And With A New Movement (SPB453, SPB451 & SPB455).”
- https://www.hodinkee.com/articles/seiko-prospex-1965-heritage-diver
Hodinkee reports 46.4mm lug-to-lug, 40mm case size/width, 13mm thickness for Seiko Prospex 1965 Heritage Diver in “Seiko - Improving on a Classic.” Hodinkee derives the 46.4mm span from a stated 1.2mm reduction versus the 47.6mm predecessor.
- https://www.hodinkee.com/articles/the-23-story-of-24-hands-on-with-the-seiko-prospex-spb451-and-spb453
Hodinkee reports 46.6mm lug-to-lug for Seiko Prospex 1965 Heritage Diver's Watch in “Hands-On: The Seiko Prospex SPB451 And SPB453.”
- https://www.hodinkee.com/articles/the-seiko-prospex-spb451-and-spb453
Hodinkee reports 46.6mm lug-to-lug for Seiko Prospex 1965 Heritage Diver's Watch in “Hands-On: The Seiko Prospex SPB451 And SPB453.”
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