The underlying cause of the Apple Watch defect is that Apple designed and manufactured the Apple Watch in such a way that fails to prevent the lithium cobalt oxide battery from contacting the Watch screen, leading to operational failures and injuries from broken screens. Specifically, consumers have alleged that despite knowing the battery can suddenly swell, Apple allocated insufficient room inside the Apple Watch for it to freely expand without affecting the screen face and/or failed to incorporate a protective guard to keep it from contacting the screen face.