Guide
How to Choose the Right Watch Size
Diameter is only half the story. Here's how lug-to-lug, thickness and case shape really determine fit.
Quick answer: Measure your wrist: under 6.5 inches suits 36–39mm, 6.5–7.5 inches suits 39–42mm, and larger wrists suit 42mm and up. Lug-to-lug length matters more than diameter — it should not overhang the edges of your wrist.
Shop Men's Automatic Watches →Measure your wrist
Wrap a strip of paper around your wrist just below the wrist bone, mark it and measure the length. Most men fall between 6.5 and 7.5 inches; most women between 5.5 and 6.5 inches.
Diameter guide
- Under 6 inches: 28–36mm
- 6–6.5 inches: 36–39mm
- 6.5–7.5 inches: 39–42mm
- Over 7.5 inches: 42mm and up
Lug-to-lug is the real test
Lug-to-lug is the distance from the top lugs to the bottom lugs. If it is wider than the flat top of your wrist, the watch will overhang and look too big, whatever the diameter.
Thickness and shape
Thicker watches sit taller and catch shirt cuffs. Square and cushion cases wear larger than round ones of the same width; bezels with wide inserts wear smaller because the dial looks smaller.
Our sizes
- Rosemariner: 40mm
- GMT Rose: 40mm
- Rosetona: 39mm
- Rosejust: 36mm, 39mm or 41mm
- Roseter Perpetual: 36mm, 39mm or 41mm
- Lady Rosejust: 31mm or 36mm
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Frequently Asked Questions
Is 40mm too big?
No. 40mm suits most wrists between 6.5 and 7.5 inches.
Can women wear 40mm watches?
Yes, if lug-to-lug fits the wrist. Many prefer 34–38mm, such as the Lady Santorose.
Do bracelets change the fit?
Yes. A bracelet adds visual weight; a strap makes a watch feel smaller.