The Bluebuds X by Jaybird are designed with the serious athlete in mind for optimal performance and comfort. The Bluebuds X wirelessly connect to your device via Bluetooth and offer top audio quality without the risk of the buds falling out during vigorous activity. Whether running, skiing, cycling or in a crossfit workout, the Bluebuds X will remain comfortably in your ear. The Bluebuds X can also be operated by Jenna voice-command and feature Signal Plus skip-free technology.