Navir UFO Gyroscope with light Insert the end of a string through the axle opening of the gyroscope. Let the axle turn until the string is almost completely wound up. Then hold the gyroscope and pull the string. You can then balance the gyroscope on the base, on your finger, on a string or on another object. Specifications: Color: blue Gender: junior Material: plastic Dimensions: 7 x 8 cm Age: from 6 years Batteries: 2 button cells, these are included