You might be right about the 170mm. I couldn't figure out how to measure my wrist in mm's. Lol, not that I tried that hard. I used the "actual case size" feature in the Apple Store web site on my iPhone to do my determination. However, after I got my watch that seems to be a little off.
I decided on the 38mm for 2 reasons. 1) I didn't want a big watch, not the the 42 is a real big watch. And 2) when I look at my watches from straight on I like to see a good portion of the strap, it's part of the beauty of it IMHO. The 42 would not have shown as much of the strap as I would have liked.
When it's all said and done, it's a matter of personal preference. These people who ridicule others for the size they purchased should be asshamed. Because 1) it's just to hard to judge by these pictures and 2) again, it's personal preference.
So my advice is, make yourself happy not others.
