This toy is designed for infants and toddlers to become familiar with the idea of reacting to a stimulus. The lights will indicate whether or not the child has successfully reacted to the stimulus.
When turned on, the lights around the edge of the rattle will emit lights, and the plastic surrounding the lights will have a pressure sensor. The lights on the rattle will remain on until the child pushes down on the light.
The rattle will be made of a durable plastic that will not crack when dropped. The plastic surrounding the lights will also be made of durable plastic, and there should not be a way to separate the plastic covering the lights from the rattle. This should not present a choking hazard since this toys targets infants and toddlers.