Helmet Stereo Earphones + Microphone, remote-control for recent iDevice models The remote and mic are supported only by iPhone 3GS or later, iPad, iPod touch (2nd generation or later), iPod classic (120GB, 160GB), and iPod nano (4th generation or later). The remote is supported by iPod shuffle (3rd generation or later). Audio is supported by all iPhone, iPad, iPod and any 3.5mm MP3/audio models. Stereo Earphones With Microphone and iDevice Remote Control for Helmets (3.5mm jack, 4ft long cable). For motorbikers, skiers, snowboarders, sky-divers, etc. Earphones firmly fixed to inside of helmet via Velcro, great stereo sound quality. Microphone for best voice quality. Remote control for iPod, iPhone, iPad models that support remote control. Remote control functions: Play, Pause, Next, Previous, Vol+, Vol-, Answer call, Hang-up call. Can attach to iPods/iPhones/iPads/MP3/Bluetooth receivers with 3.5mm audio jack