Product features:1.360 degree self rotation the primary purpose of the self rotating ball is to have your pet chase the ball around and have fun. With just a single press of a button, the ball will start to do a 360 degrees self rotation and attract your pet's attention. The ball will continuously move around your house while producing a red light simultaneously.2.Automatic direction change - due to the sphere shape and self balancing system, the ball will automatically change its direction when colliding with a wall, chair, door, etc. no extra help required, all you need to do is turn the ball on to play and turn off.3.Best indoor exercise for pet - your pet will no longer have days when it is bored and sitting around all day. The self rotating ball will keep your pet busy and get them up and moving.4.Three pair of battery We have decided to include an three pair of battery within the package, so that our customer and their pet can enjoy the endless fun that our Self Rotating Ball brought three times longer.5.Tips - when you insert the battery, you want to have the smaller side of the battery facing up. If this is not done correctly, the light will not turn on.