Specifications: Compact and portable, easy to carry. When you pull the string, the ball starts to spin. Wrap the thread around the thin axis of the ball, hold the string in your hand, the ball rolls up as it goes through the winding. A great gift to your kids. Type: YoYo Ball Color: by Random Material: Plastic Power: 1 x Button Cell (Included) Features: High Speed, Luminous, Kids Toy Size: 5.7cm x 3.5cm/2.24" x 1.38" (Approx.) Notes: Due to the light and screen setting difference, the items color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x YoYo Ball Compact and portable, easy to carry. When you pull the string, the ball starts to spin. Wrap the thread around the thin axis of the ball, hold the string in your hand, the ball rolls up as it goes through the winding. A great gift to your kids.