Why was the toy stethoscope sold on Amazon considered illegal?

The toy stethoscope sold on Amazon was deemed illegal because it contained 70% lead, making it extremely hazardous, especially for children. This dangerous composition came to light when a parent reported that her child became very sick after using the toy. Lead exposure is particularly harmful to children's developing bodies and can cause serious health problems with even minimal contact. Product safety regulations explicitly prohibit such high concentrations of lead in children's toys due to the severe health risks they pose.