Evolution 9 Spring Drive U.F.A. Self-winding 40mm

How it wears

Wears true to its 40 mm case size

Grand Seiko Evolution 9 Spring Drive U.F.A. Self-winding 40mm measures 47.2 mm lug-to-lug on a 40 mm case, a lug-to-lug ratio of 1.18 against a database median of 1.18. That span is longer than 54% of the 8,010 watches in this database and longer than 68% of the 232 Grand Seiko watches listed.

A flat wrist width of 53 mm (2.09 in) or more keeps it in the balanced range, and from 63 mm (2.48 in) it starts to look compact. Below 47.2 mm (1.86 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 11.7 mm thick it sits within the typical range, thicker than 39% of the watches with a listed thickness.