Wrist watches used to be women's wear. Pocket watches were for men until WW1 when they found out that wrist mounted timepieces are super handy when you need to carry a rifle all the time and launch attacks synchronized with walking artillery barrages.

Just like anything else it can be purely for looks or purely for function but the best stuff does both at once. A nice looking precise watch, a pen that looks and writes great, dress shoes comfortable enough to wear all day, an Italian suit with a tactical liner lol