Nicole Kidman wears an unidentified watch

Nicole Kidman wears a watch on a thin black strap as Becca Corbett in Rabbit Hole (2010). At the grocery store, bag on her shoulder, it sits low on her wrist, a small case on a slim black leather strap with the dial turned away. No maker shows. If you can place this delicate watch, or want to guess, say so in the comments.