 As the record played (typically telling a story), the slide strip, through which the images were projected on the screen, would automatically advance to illustrate it.The mechanism by which the slide advanced was purely mechanical, and was based on the rotation of the turntable, so proper operation required manually spinning it a few revolutions before beginning the presentation.The original selling price of the unit was $29.95
and Picturesound programs sold for 99 cents with "a library of five programs" selling for $4.95.