Dog Balls,The 3rd Generation Interactive Toys for Puppy/Small/Medium/Large Dogs,Improved Dog Rolling Effect Tennis Ball with Strap, Tough Motion Activated Automatic Moving Dog Toys (Yellow)2 Selectable Modes Irregular Rolling Mode: Press the button for the first time (blue light), and it will automatically roll and rotate for 25 seconds, then stop for 5 seconds, repeating this cycle for a total of 2 minutes before entering standby mode. Crazy Bouncing Mode: Press the button for the second time (red light), and it will bounce for 10 seconds, stop for 5 seconds, repeating this cycle for a total of 1 minute before entering standby mode