The best watch is not necessarily the most expensive one. It is the watch that suits your clothes, fits your wrist comfortably and feels natural enough that you actually want to wear it.
Think about how you normally dress
If most of your wardrobe is casual, an understated watch with a simple dial and versatile strap will usually get more wear than something extremely formal or elaborate.
For smarter wardrobes, leather straps and cleaner dials tend to sit naturally alongside shirts, knitwear and tailoring.
Get the proportions right
A watch should feel balanced on your wrist. Very large cases can overwhelm a smaller wrist, while an extremely small watch may look lost on a larger one.
There is no single perfect case size because the shape of the case, bezel and dial all affect how large a watch appears. Comfort and proportion matter more than the number on the specification sheet.
Choose the strap carefully
The strap can completely change how a watch feels. Brown leather tends to look relaxed and traditional, black leather usually feels smarter, while metal bracelets can work across both casual and formal outfits.
Changing the strap is also one of the easiest ways to give an existing watch a different character.
Do not overthink matching
Your watch does not have to match every element of your outfit perfectly. A little coordination is enough. Leather colours that sit comfortably alongside your belt and shoes usually look considered without becoming too deliberate.
Watches are ultimately one of those small details that help an outfit feel finished. You can find more guidance like this in Details & Refinements.