Before you hit play, there's a cuss in the video you might want to know about if your office frowns upon this kind of thing. So what happens when the iPhone's stopwatch hits 1000 hours? It keeps going fine, but you no longer can see the seconds go by.

No word on 10,000 hours. Probably explodes.

Crazy college kids and their crazy research, eh? [via daringfireball]