Anything can get a guys attention. Sight, smell, even hearing your voice. It was my girlfriend's laugh that caught my attention. Allot can be told from a woman's walk and how she carries herself. But, that takes attention to detail and not too many guys have to patience to do that. I don't know. There's so many things about a woman that can get a guys attention. It's different for every guy as well, so good luck getting a definitive answer.