Assorted Flashing Mini Sports Bouncy Balls

To activate the LEDs in your Light Up Sports Ball, throw it down on a hard surface. The bright lights will flash on & off for about 15 seconds, then shut off automatically. Diameter 2.25 in. / 5.71 cm. - LED Colors: 1 Blue, 1 Red - Batteries: Ready to use with nonreplaceable batteries - Weight: 0.11 LB