A strange, "never seen something like that before" item. Originally it is probably a portable karaoke player and the idea behind it would be to walk around while playing a song and sing the lyrics on top, knowing it by heart. You have to insert a regular cassette tape into the player and then you can play it while singing/recording on top. Your voice and the music is being plaid together out of the integrated speaker. It has an option to connect external mic. You also have an echo effect to be used on your voice. In oRiginal box. It works with 4 AA size regular batteries or electric plug of DC 6V. Plug is not included in the box.