Smart interactive play: supports normal mode and smart sensing mode. In smart mode, the cat needs to touch to start, and fun interaction stimulates the cat's nature.Dual-speed adjustment: You can easily switch between high and low speeds according to the cat's activity level to meet the play needs of cats of different ages and personalities.USB charging design: Built-in 150mAh lithium battery, it can be played for 90 minutes after being fully charged. USB charging is convenient and environmentally friendly, and you can play at any time without worry.Replaceable tail + textured surface: It comes with a replaceable tail, and the spherical corrugated design makes the movement trajectory more random and flexible, which continuously stimulates the cat's hunting interest.Lightweight and portable, safe and durable: 50mm in diameter, made of ABS+silicone material, safe and odorless, weighing only 40g, easy to store and carry, suitable for indoor cats to play at any time.