There are many with smaller wrists (like mine, at 6.6") that would never wear anything larger than a 42mm. I happen to own an older 45.5 Planet Ocean non-chrono in stainless and have no trouble wearing it comfortably. The bracelets are well-designed and wrap the wrist nicely. The chrono POs are going to sit taller on the wrist because of the complication. All the new POs are a bit taller than the older because of the new movements.