With colorful light, with beautiful and dazzling music, one is the children's favorite toys. Note: the bottom of the gyro belt at the beginning, the rotation is necessary to open the switch, the gyro placed in mid air to stop for a few seconds and put it on a ground or a flat place, can rotate, if you need to rotate the gyro stopped and need to manually turn off the switch, price is not the price of electricity and electricity pool with three particle 1.5V AA batteries. (No. 5 batteries).