The interactive cat toys ball rolls best on hard floor, but might not roll well on thick carpet, please purchase with attention. Please do not play in the stairwell to avoid damage. The cat toys ball can be switched from red light and colorful lights, which can quickly attract kittens attention and enjoy the fun. Rechargeable: No need to replace batteries over and over again, just simply plug in the cable for 1.5 hours, providesyour kitty up to 4 hours of fun time. The primary purpose of the self rotating interactive cat toys 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. Theball will continuously move around your house while producing a red/colorful light. 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 when your pet is outof energy and done playing. Upgraded USB Charging & Large Battery Capacity 1.USB rechargeable design. No need to replace batteries. 2.Built in high quality lithium battery, 1.5H charging time supports 4 hours fun time. 3. 45 mins auto power off, will not consume too much energy of your kitty. Attract Cats Attention 1.Come with feather, bell and plush balls accessories to attract the cat's attention when your cat playing with it. 2.Motiving your cat's hunting instinct, let your cat get more exercise while chasing, prevent from fat and boredom