This is a unisex device. It looks good on both women and men. :-)
I will say that it's a pretty big watch, so it might look better on men than women, but that's just a taste thing. (Be sure to measure your wrist for the band though. I had not done that and assumed that I needed a Large since I needed a Large with my Fitbit Charge HR, but I think that I probably could have just gotten away with a Medium.)