Seiko Prospex Marinemaster 1968 Heritage Diver HBF001 HBF002 42.6mm

How it wears

Wears true to its 42.6 mm case size

Seiko Prospex Marinemaster 1968 Heritage Diver HBF001 HBF002 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 78% of the 8,010 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 84% of the watches with a listed thickness.