Please Note: This product is designed with 10-minute timer function to avoid sports injuries caused by excessive exercise. Do not use it continuously. The products comes with USB cable. Please Note: This product is designed with 10-minute timer function to avoid sports injuries caused by excessive exercise. Do not use it continuously. The products comes with USB cable. Product Features: There are universal wheels at the bottom of machine that can move in random directions, the wagging tail attracts cats to play, and the front is equipped with pointer cat toys. Two spring balls are designed on the top, which swing as the machine travels, increasing fun of cats.