My wheelhouse is 32 - 37.5 mm for a dress watch (35.5 optimum), and 36 - 40 mm for a casual / sport watch (38 optimum). I can wear up to 42-ish mm but only if it has an offset crown, like at 4:00 or on the left side. Otherwise it digs into the back of my hand. And no, I can't wear it above the wrist bone due to the slope of my arm.
I'm also
very conscious of a watch's height, especially in relation to the case diameter. Sold some DAMN nice watches because they felt disproportional on my arm or wouldn't tuck easily under my cuff.
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