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i can not wear 42mm round watches, looks stupid on my thin wrist.
according to a watch store, i should wear 39 or 40mm, maybe 41mm max. (depends on the style)

but the 42mm apple watch fits perfectly.
 
The big ben on a dog collar (Invicta) only affects a small segment of the population.
38 - 42 sized correctly for most of those still wearing a watch.
 
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