Prospex Sea Diver’s Watch Mechanical Jaws 50th Anniversary Limited Edition 45mm

How it wears

Wears smaller than its 45 mm case suggests

Seiko Prospex Sea Diver’s Watch Mechanical Jaws 50th Anniversary Limited Edition 45mm measures 47.7 mm lug-to-lug on a 45 mm case, a lug-to-lug ratio of 1.06 against a database median of 1.18. That span is longer than 60% of the 7,421 watches in this database and longer than 71% of the 390 Seiko watches listed.

A flat wrist width of 53 mm (2.09 in) or more keeps it in the balanced range, and from 64 mm (2.52 in) it starts to look compact. Below 47.7 mm (1.88 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 13.2 mm thick it sits within the typical range, thicker than 67% of the watches with a listed thickness.