It is a sign that the product is officially released. Switch refers to a handheld console released by Nintendo. The steel seal on it refers to the officially issued logo after the product has been comprehensively tested before release, including the product's trademark, model and serial number. The steel seal on the Switch is also a way to check whether the Switch product is legitimate. The steel seal of a legitimate product is clear and effective, and it is a bulge formed by casting or embossing, usually on the upper right rear of the handheld device.