APH Sound Balls are designed for visually-impaired/blind children to learn how to throw, catch, jump or kick a ball, so that they are able to gain skills needed to participate in physical activities as teens and adults. There are two colors to choose from, with sound differences. POWER: Charger included. OPTIONS: Color and sound options. DIMENSIONS: 7.5 inches diameter. COLOR: Red (techno sound) or yellow (boing sound). WARRANTY/GUARANTEE: As stated by the manufacturer.