Smith Optics Twin-Tip Drop-In Helmet Audio Kit The ultimate use in electronics on the hill. The all inclusive Smith Twin Tip features audio & cell phone access for all non-apple hardware.
Giro TuneUps Audio Drops Basic Kit Giro's basic TuneUps audio system, powered by Skullcandy, offers great stereo sound with an in-line mute button and a volume dial for quick, simple sound control when you need it. The system installs in a snap without tools.
