I don't quite agree that they are quite boys/girls watches. Back in the 60's/70's the watches were all that size, including some current Airking models. The Patek 3919 is 33.45mm and that is definitely not a "boys" model. If we are talking "boys" models, then the 6426 qualifies for that at 29mm. As mentioned, i have this 6426 saved up for my daughter, as it makes a perfect size for a womens's watch, much better than the 23 - 26mm current womens sizes.