Giro TuneUps Bluetooth Link: TuneUps™ with Bluetooth LINK™ technology from Skullcandy™ allows you to hard-line into your music player while connecting to your Bluetooth enabled phone wirelessly. A simple touch answers incoming calls while one more disconnects you and gets your music back online. The new TuneUps Audio Drop technology is applied to every component of the audio program. So now every Audio Series helmet and TuneUps after market kit features 40mm speakers that produce crystal clear treble and deep thumping bass. In addition to a step up in audio output, the system is easier than ever to use. Super thin speakers drop into the newly designed Giro earpads that come with your helmet* so you’ll never lose the integrated design of your earpads and your helmet.