Well not directly, but if you read this
http://www.omegawatches.com/collection/seamaster/couple
then you will know why many sites categorize below 38mm new Omega watches as Ladies watch.
Omega is not the only one. Until couple years ago Corum defined 40mm and smaller as ladies watch. Their men watch start at 42mm up to 48mm. I knew because that was one of the reason I sold mine (40mm Admiral Cup).
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