【USB Charging & Portable】 This electric cat ball has a built-in 250mAh rechargeable battery and can be used for up to 4 hours. It can be easily charged with the included USB cable, allowing for about 2 hours of play with a 1-hour charge. The design that eliminates the need for battery replacement makes daily use much more convenient. 【Preventing Accidental Operation】 To prevent pets from accidentally operating the device, the power button needs to be held down for 2 seconds to turn it on. This design prevents accidental switching during the pet's play, enhancing safety and reliability. It only starts when the owner intentionally presses and holds the button, effectively avoiding the inconvenience of accidental operation. 【USB Charging & Portable】 This electric cat ball has a built-in 250mAh rechargeable battery and can be used for up to 4 hours. It can be easily charged with the included USB cable, allowing for about 2 hours of play with a 1-hour charge. The design that eliminates the need for battery replacement makes daily use much more convenient. 【Glowing Automatic Rotating Pet Ball】 This moving ball for dogs features 3 types of play: rolling, moving, and bouncing, along with colorful LED lights to fully stimulate a dog's curiosity. Pressing the switch automatically rolls, shakes, and bounces, providing interactive play. With 2 modes to choose from: normal/smart, any dog can enjoy it. The cool light effects attract the dog's attention and make playtime even more fun. 【Automatic Obstacle Avoidance Function】 This ball is equipped with an obstacle detection sensor, which automatically changes direction to avoid obstacles when detected. It moves smoothly even in narrow spaces without getting stuck, allowing dogs to constantly receive fresh stimulation and chase it without getting bored. High sensor accuracy means there is almost no worry of colliding with obstacles, allowing for safe play.