The HSBCD279 Dual Mode  helmet headset with new ultra slim speakers was designed to install into most open face style helmets.  It features the High Output AeroMike® III miniature boom microphone, enhanced DynaPort® helmet speakers, universal clamp-on mounting system and the upper section (only) and economical right angle 8-pin, two-piece hook-up cord. The AeroMike® III offers superior ambient noise canceling and wind blocking ability.