Prospex Marinemaster 1968 Heritage Diver 42.6mm
HBF002 · JAMSTEC Limited Edition
How it wears
Wears true to its 42.6 mm case size
Seiko Prospex Marinemaster 1968 Heritage Diver 42.6mm measures 49.3 mm lug-to-lug on a 42.6 mm case, a lug-to-lug ratio of 1.16 against a database median of 1.18. That span is longer than 77% of the 7,413 watches in this database and longer than 85% of the 390 Seiko watches listed.
A flat wrist width of 55 mm (2.17 in) or more keeps it in the balanced range, and from 66 mm (2.60 in) it starts to look compact. Below 49.3 mm (1.94 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 14.1 mm thick it is on the thicker side, thicker than 83% of the watches with a listed thickness.
Wrist fit analyzer
Fit reference
Fills most of the wrist for a bold, sporty fit; lug shape and end links matter.
Sources
- https://www.seikowatches.com/kr-ko/products/prospex/hbf002j1
Manufacturer page: 42.6 mm case, 49.3 mm lug-to-lug, 14.1 mm thickness, and 20 mm lug width.
- https://www.fratellowatches.com/introducing-the-updated-seiko-prospex-marinemaster-hbf001-and-hbf002/
Fratello introduction lists the HBF001/HBF002 Marinemaster case family at 42.6 mm diameter, 14.1 mm thickness, and 49 mm lug-to-lug.
- https://monochrome-watches.com/seiko-prospex-revamps-the-marinemaster-with-the-1968-heritage-diver-hbf001-and-jamstec-limited-hbf002/
MONOCHROME reports 49.3mm lug-to-lug, 42.6mm case size/width for Seiko Prospex Marinemaster 1968 Heritage JAMSTEC Limited Edition in “Seiko Prospex Revamps the Marinemaster, with the 1968 Heritage Diver HBF001 and JAMSTEC Limited HBF002.” The article's explicit planar case length/top-to-bottom dimension is stored as the lug-to-lug equivalent.
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