PRO SOUND audio kit for Schuberth is designed for riders who want to boost audio comfort when using Interphone intercoms with Schuberth C3 and C3 PRO helmets. Thanks to superior speakers efficiency, PRO SOUND reaches an all new level in terms of acoustic performance with deep bass, strong midrange and surprising treble. PRO SOUND is easy to install and fits perfectly inside the dedicated slot of SHOEI helmets. The results of this new concept are bigger speakers, louder music and crystal clear. Features: “Hi-tech” microphone. Dual “High performance” ultra thin headset. Optimum sound quality. Easy to install. Adheres perfectly to the inside of the helmet. Can be used with INTERPHONE MC/XT SERIES, F5S and F5. Tested for use with Schuberth C3 and C3 PRO helmets.