The distinctive profile of the KEF M200 earphones references a musical note. The KEF M200 utilizes an innovative and comfortable user adjustable Secure Arm that helps to keep them snug in the ear and provides lasting comfort even for prolonged listening. The rigid aluminum driver housing incorporates a dual dynamic driver system that eliminates unwanted vibrations and raises sound performance to new levels. The KEF M200 embodies the same ethos as every KEF speaker: quality engineering to enhance the enjoyment of pure sound.