Product Title:Ball Automatic Smart Cat Toy.Interactive Cat Toys Ball Best Smart Cat Interactive Toys Automatic Self-Rotating and USB Rechargeable Cat Electronic Toy Ball for Indoor Cats Kitten Exercise ToysUSB Rechargeable Cat Ball Toy: supports 4 hours playtime for your cats after full charge about 1.5 hours. USB connector makes charging easier. No need to buy and replace batteries360 Degree Self-Rotating: with external ON/OFF button, cat ball will start 360 degrees self-rotation and attract your pet's attention to chase and run, which will continuously move around your floor while producing a red light simultaneously. This cat toy balls 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 out of energy and done playing.Automatic Shut Off:The ball will automatically turns off after 45 minutes of rollingDue to different measurement methods, please allow a measurement error of 2-3cm.Due to the problem of shooting tools and light, please allow the color difference between the picture and the product.