I have confirmed that the sample cassette works with batteries inserted. For Family Basic DATA RECORDER Data Recorder HVC-008 Nintendo Nintendo This item has been stored indoors for a long time. Includes data recorder, 2 connection cables, and a sample tape. *Instruction manual is not included. This is an old product, so the box has some damage. Please understand that there may be minor scratches and dirt from storage due to its age. Please check the photos for details.