I checked my tape and you can definitely see him pull something fairly large, larger than a pen, out his pocket and play with it a bit. Closer photos of it make it out to be rectangular in shape, definitely not pen or glasses, though both would be against the rules as well.
Jessie,
Do you have a link to the video showing President Bush had an earpiece, or is it just a rumor? I think you said you saw it on another site. Which one?