Well if they do I'll have a boxful thanks
I've got my moderator's hat on here, happy-diver. Whilst your comment made me laugh out loud, it's not appropriate at this time.
Do you have a more discerning answer for the question?
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Well if they do I'll have a boxful thanks
No they don't, you still hear every sound around you, they sit in the outer ear shell (if my terminoligy is correct) and not in the channel leading into the ear so it's not blocking out sounds.Quick Q to the wearers - Do they impede hearing ability UW? like hearing a tank banger when buddy is signalling you?