I would not say that in these headphones you just "hear everything" that is happening outside. When the son listens to music in them at a decent volume, it is problematic to shout to him. Probably not as difficult as with ordinary headphones, but still, the audibility of the outside world is also limited by headphones with bone conduction. You should keep this in mind so that, relying too much on hearing, you do not get into a dangerous situation.
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