it take a long time for the dealer to get it ship . I receive the headphone and be very pleased with the sound and fit at first . but it never fail , the same thing that happen to my other Sennheiser headphone happen here . the usb male port adapter lose connection to the full sound . I maybe use it 5 time . I just cut my loss of have to deal with the particular dealer . my suggestion be to go and purchase a 15 dollar pair from you local retail store . they will surely last longer . they have the fit and look down but not the durability .