Silent headphones Whether the headphones. Technology or any Not something dangerous and cause injustice to the user. If it is used correctly. More and fit.
Silent disasters from the headphones either headphones or any technology is not something that is dangerous and unproductive resulting penalty to the user. If it is used correctly and effectively fit etc.
Alarm silence from headphones headphones not that it will be a technology or any thing that is not harmful to the user and a penalty if there is a properly, and use other exactly.