Kasonic&reg; Sports Actrail Earhook KN-042 Headphone (Red) High-resoulution sound quality, Architectural design of ultra-rapid response to enjoy listening to the best effect, to provide clear sound quality. Built-in microphone, Built-in hands-free microphone allows you to easily enjoy through the iPhone, iPad, and iPod touch video call. Noise isolation, Closed-ear design blocks outside noise and reduce the external environment of sound, the music you hear more details. Notes, Avoid driveing riding motorcycle, or other hearing aid needs, and rapid response of the occasion to wear are dangerous.