Speedmaster First Omega In Space Co-Axial Master Chronometer Chronograph 39 7 mm

How it wears

Wears larger than its 39.7 mm case suggests

Omega Speedmaster First Omega In Space Co-Axial Master Chronometer Chronograph 39 7 mm measures 48 mm lug-to-lug on a 39.7 mm case, a lug-to-lug ratio of 1.21 against a database median of 1.18. That span is longer than 63% of the 7,421 watches in this database and longer than 60% of the 487 Omega watches listed.

A flat wrist width of 54 mm (2.13 in) or more keeps it in the balanced range, and from 64 mm (2.52 in) it starts to look compact. Below 48 mm (1.89 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 13.38 mm thick it sits within the typical range, thicker than 69% of the watches with a listed thickness.