This is all rubbish. If you are a likeable person with good communication and people reading skills, you could walk into your "international trade" meetings in a t-shirt and cargo shorts and get the deal done.
If someone who you've been doing business with for years all of a sudden won't do a deal with you because of a contrast collar or a rolex, you probably aren't very good at that particular business.
You could walk into a meeting in a tshirt and cargo shorts, but what would that say about you to the people you do business with? For example, I have done business with the middle east, I went ahead and went to the meeting sans tie, at the end of the day its the little things which to someone looking out may seem "overly obsessive" but to someone on the inside its what matters.
like i said earlier, this topic is for those who either understand or dont, if you dont you may assume it doesnt matter and you could walk into a meeting wearing a hublot million dollar big bang watch and it wont matter, but the sad thing is that it will.
and I dont like digital watches, i think the digital watches posted here like the burberry sport or the black one with the blue led light does the complete opposite of what im trying to achieve, they are flash and counter productive to the objective goal. when I say digital watch I mean a black timex T75961, not a white or green gshock