High-performance YoyoThe YOYO is a plastic sleeve or spool that is placed over the axle and enables long smooth spins.When the player flicks the wrist, The yoyo spins at the end of the string. With another flick of the wrist, The yoyo returns to the hand. Intermediate and advanced play: responsive play is the best choice for the intermediate player who wants to perfect string tricks. It is also a great choice for the advanced player who wants to perfect looping skills. Great for kids of all ages to perform like pros! whether 'walking the dog' Or going 'around the world, ' the yoyo will advance their skills to perform a wide variety of tricks. Package Content: N1 LED YOYO - 3 small batteries included