Jingle Multisensory Ball

Tracking is easy! There's an oversized bell that rolls freely inside this molded hollow ball, so every movement triggers loud ringing sounds for auditory feedback. Ball is especially beneficial for those with visual impairments or attention deficit disorder (ADD). Ball weighs 12 ounces and has a 6-5/16 inch diameter.

https://www.schoolspecialty.com/specialty-shops/flaghouse/special-needs/flaghouse-jingle-ball-2120697