My girlfriend does not know about my special liking. She does wear rather small watches, which is better than nothing right? But I would love to see her wearing a watch that...well... fits my needs a little more...

Since I want to keep my fetish to myself for now it's not that easy to talk her into getting a new watch without her getting suspicious... So far I at least got a :" if you think I should wear a bigger watch, then go and present me with it" out of her. Well, fair enough! Not least because I actually do myself a favor

And since the next anniversary is just ahead....
Now, here's where you guys come into play. I am not that familiar with the watch market and since I am German I will have a hard time explaining my preferences, but I still hope you can help me out.
First and foremost it should not be too expensive. Let 's say 200€ max.
Generally speaking it should be a mid sized metal watch, not gold.
The colors of the face should be white or maybe even black.
The wristband should be delicate (is this the right word?!)...
I do like the Rolex style Invicta faces, their watches seem to be too big though. Same seems to be true for the Kors watches. If I will find the time I will try to edit to post and include examples of possible watches. So far I have no clue, which watch to get