A business casual men’s watch should be both elegant enough ... with a micro-patterned or textured jacket for example.
Otherwise, ballerina or d'Orsay flats are good options to feel comfortable and look professional. Generally, business casual for men includes chinos or slacks, a button-down shirt, a belt, dress socks ...
Generally, business casual for men includes chinos or slacks, a button-down shirt, a belt, dress socks and dress shoes. A colored button-down shirt is more casual than a white button-down shirt.