Taking a decent watch photo can be a frustrating process. There are so many problems to deal with. Those shiny cases and reflecting crystals can drive you nuts. One other challenge that you'll encounter is dust. Especially if you're trying to shoot macro photos.
Dust really seems to love settling down on your watch. You were really convinced that you got rid of all it with your polishing cloth, but in your photos these little dust particles are there nonetheless. And looking as huge as snow flakes. Sounds familiar? Sure, you can use Photoshop to remove those ugly specs, but you won't have to spend time getting rid of it if it's not there in the first place. And it will safe you from having to buy and learn software too.
Sometimes the answer is so simple:
Compressed air! What a godsend! I bought one of these to clean my computer keyboard and then realized how useful they can be for watch photography. Of course, you'll still have to spend some serious time preparing your watch for a photograph, not just the scene. And you'll still need a good micro fiber cloth - a good one, not the one you got with your watch - to get rid of finger prints and smudge. But once you have your watch in place, nothing gets rid of those dreaded dust particles as an air duster. And don't forget to redo it after moving the watch or after taking a few shots.
Most computer and office supply stores sell air dusters and they're offered by many different companies using different names. Memorex and Fellowes sell them using the most commonly used name "Air Duster", Areosol are using the name "Dust Off" and Belkin are using the name "Belkin Blaster".