Assistive Technology Loan Library item === Push a switch and the goo-filled tube rotates while music plays and a powerful light illuminates the goo flow. Activation time is adjustable from 0 to 50 seconds. Size: 10"L x 9"W x 9"H. Requires Capability Switch and 4 C Batteries. Switch-adapted. Switch not included. Website: www.enablingdevices.com.