揇ouble Swallow?magnetic rattlesnake sound eggs are high-tech products of brightness and rigidity. These products are world popular in toy and health care market. When two eggs are thrown up into the air, they will produce rattlesnake sing sound, because the two eggs?strong polarity make them rotated with high speed and rub each other. These products also are abroad used in heath care kneading and give people a lot of enjoy and comfort. 揇ouble Swallow?magnetic rattlesnake sound eggs make you in possession of happy as well as health.