Dan´s Data has posted a review on the Aiptek VGA PenCam Trio.
The Aiptek´s lens is a basic webcam unit, down to the rotating focus ring.Read more
I´m not sure whether Aiptek intend you to be able to manually focus this camera. You can, but the ring is quite tight and can only easily be turned with a pointy implement stuck into one of the scallops around its edge. On the plus side, this means the focus won´t be changed if the camera´s bouncing around in your pocket.