Diameter is only part of the picture.
Case diameter describes the width of the watch body. Two watches with the same diameter can have very different lug shapes. A longer set of lugs can make a smaller watch occupy more of the wrist than a wider watch with short lugs.
Measure the flat part of your wrist.
Use a ruler to measure across the top of your wrist where the watch sits. Compare that measurement with the watch’s published lug-to-lug. A case that stays within that width is a starting point, but not a guarantee of comfort.
Bracelets can change the result.
Rigid end links and integrated bracelets may extend the effective footprint beyond the case. Curved lugs can help a case follow the wrist. Try the watch on if you can, especially if its measurements are close to your wrist width.
Put the details to work.
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