a man standing in front of a projection screen a man standing in front of a projection screen a man is standing in front of a projection screen a man standing in front of a projection screen a man standing in front of a projection screen a man is standing in front of a projection screen a man is standing in front of a screen with a presentation a man standing in front of a projection screen a man is giving a presentation on cell phones a man is standing in front of a projection screen a man standing in front of a projection screen a man is standing in front of a projection screen a man standing in front of a projection screen a man standing in front of a projection screen a man is standing in front of a projection screen a man standing in front of a projection screen a man standing in front of a projection screen a man standing in front of a projection screen a man is standing in front of a screen with a presentation a man standing in front of a projection screen a man standing in front of a projection screen a man standing in front of a projection screen a man standing in front of a projection screen a man is standing in front of a screen with a presentation a man standing in front of a projection screen a man standing in front of a projection screen a man standing in front of a projection screen a man is giving a presentation on cell phones a man standing in front of a projection screen a man standing in front of a projection screen
A man giving a speech showing a picture of electronics. a man is talking  on stage about cell phones.  A man in a white shirt giving a lecture with a picture of cell phones behind him.  A man holding a remote while standing in front of a projection screen. A man giving a presentation that involves cellphones.