Music Pen Cap

It's a set of pen cap that can produce different sound levels.
This product is mainly aimed at children aged 7 to 12."Tumbler" pen cap combines the design of scale through visual sense,The tip of the cap will jut out,so you can use your thumb to push it with less energy and you can also easily unload or put on it.When the pencil lightly crosses,some different tones of crisp sweet music will come out.The "music" pen cap can not only exercise the player's patience,stimulating their auditory development,developing their perception of music,and maintaining their interest in painting.