Well, not too long. This is a lovely young woman doing a very genuine masturbation. When the progress bar reaches the "end" and you see the "Play Again" overlay, **don't stop** watching. The video goes on for several more minutes, ending in a very nice orgasm. I love these Yanks/SeeMyOrgasm videos because the video quality is almost always excellent and the orgasms are genuine. Just excellent to put up on a big flat screen TV.
http://www.seemyorgasm.com/video/chloe-is-clitacular-3113.html