SB04-E Pietersite Platinum 39.5mm

How it wears

Wears smaller than its 39.5 mm case suggests

Sartory-Billard SB04-E Pietersite Platinum 39.5mm measures 45 mm lug-to-lug on a 39.5 mm case, a lug-to-lug ratio of 1.14 against a database median of 1.18. That span is shorter than 70% of the 7,413 watches in this database and shorter than 25% of the 8 Sartory-Billard watches listed.

A flat wrist width of 50 mm (1.97 in) or more keeps it in the balanced range, and from 60 mm (2.36 in) it starts to look compact. Below 45 mm (1.77 in) the lugs are likely to overhang the wrist. Flat wrist width is measured straight across the top of the wrist, not around it.