Listing is for a Leap Frog Leap Start Go pen. It has been tested and works fine. Please note the screen will only display images with Leapstart 3D labeled books. If it is just a standard Leapstart book the pen will be sound only. This is how the pen works and not anything wrong with it. Leapstart 3D books will say 3D in the upper right corner. Please read entire listing, view all pictures, and ask any questions before making a purchase. Please let me know if you have any issues after purchase before leaving feedback. I stand behind my items.