[Dr. Sivana]

Obama’s left-handed. Why does he wear his watch on his left wrist?

[Tijeras_Slim]

I’m right handed and wear my watch on my right wrist.

But I do have a valid long form birth certificate I can show you. ;)

[mc5cents]

Obama’s left-handed. Why does he wear his watch on his left wrist?

Probably because most watches are made for right handed people and the stem for adjusting the watch is on the right. If you have it on your right hand it is very awkward to reach over and set the time.