Goliton Motorcycle Helmet Headset MP3 Dedicated Helmet Headset Headphones Product Name: motorcycle helmet headset,connected mobile phone MP3 songs calls special helmet headset with microphone helmet headset. Product application: 3.5mm plug for most of the new smart phones such as IPHONE, Samsung and other brand mobile phones, the old part of the mobile phone is not available. Four core plug diameter: 3.5mm. Wind headset with a sponge,the headset can be arbitrary distorted position adjustment. With volume adjustment switch, adjustable volume freely.