What's the name of this? Children's toys

This toy is called: pull whistle, also known as pull the line gyro, pull the line flywheel, 80 nostalgic toys, pull the flywheel rotating at high speed, can send out whistles, some of the internal increase in the light-emitting device, but also can be luminous.

How to use: tie the rope on one ring, in turn, through the middle of the pull whistle 1 hole, another 1 ring, and then back through the middle of the pull whistle another hole, and finally with the first ring connected. Before pulling the first two hands to shake the pull whistle, in order to make the rope contraction short elastic, and then pull, release the rope, this time the high-speed rotation of the pull whistle will make a sound.