a headphone assembly includes a pair of earpieces , each for engagement over one ear of a user . the earpieces are coupled to ends of an arcuate headband adapted for wear on the user &# 39 ; s head . a microphone boom for holding a microphone is retained to one of the earpieces by a housing having mating upper and lower gaskets . the gaskets have notches for retaining the microphone boom within the gaskets .