Much as the body sneezes to remove foreign substances from the nasal cavity, this radio allegedly sneezes to cleanse its microprocessors of dust. The details:
. . .the radio is forced to sneeze every six months in order to protect the microprocessors from dust. Users can manually override the bi-annual sneeze, with a SNZ button being added for those days when you really don't have time to give the feather duster a work-out.