Does the Magic Mouse Laser Light Up?

I was having a bit of trouble with my Magic Mouse and it was not tracking properly. A battery change seems to have helped. But I looked at the underside of the mouse and did not see any light coming from the optical port. For the life of me I cannot remember if the Magic Mouse is supposed to have a red laser light visible on its underside or not. Can anyone help with the answer?

Regards,
Steve M.