Motion Activated LEDs for hours of play. Sensitive to even the slightest movement. Designed to appeal to you cats natural instinct to play and exercise. So they're sure to keep you car healthy and happy. As you cat swats at and rolls the LED Motion Activated Cat Ball, the LED lights will illuminate. After a few moments of inactivity, the lights will stop flashing to preserve batteries. At the slightest movement, the ball will reactivate. How to use: To turn on the toy, push in the red on/off switch on the side of the ball. To turn off the toy when playtime is over, push the red on/off switch.