A nice Guess watch which might suit a woman best. It is water resistant enough for you to swim with it.
From Amazon
Guess Women's Analogue Quartz Watch with Leather Strap Y13003L1
ShopBetter24
Ladies'Watch Guess Y13003L1 (Ø 32 mm)
Shopaide
Ladies'Watch Guess Y13003L1 (Ø 32 mm)