Omega Speedmaster Chrono Chime Co-Axial Master Chronometer Chronograph 45 mm

How it wears

Wears true to its 45 mm case size

Omega Speedmaster Chrono Chime Co-Axial Master Chronometer Chronograph 45 mm measures 53.5 mm lug-to-lug on a 45 mm case, a lug-to-lug ratio of 1.19 against a database median of 1.18. That span is longer than 97% of the 8,010 watches in this database and longer than 99% of the 487 Omega watches listed.

A flat wrist width of 60 mm (2.36 in) or more keeps it in the balanced range, and from 72 mm (2.83 in) it starts to look compact. Below 53.5 mm (2.11 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 17.27 mm thick it is on the thicker side, thicker than 99% of the watches with a listed thickness.