Transformers Wal-Mart Limited Edition refers to the limited edition of the siege series castanets launched by Wal-Mart in the United States in the battle of Cybertron. According to relevant information, this is the limited edition of Transformers released by Wal-Mart in September 20 19. This toy is a repainted version of SG-24 sound wave, and the soundboard is black and red, which makes it look more prominent that the soundboard is a smart spy master of the Decepticons. At that time, the price was 19.98 USD (about RMB 140 yuan).