Micro-sized, sweat-proof premium metal buds delivering superior audio performance (music & calls) rivaling the best in wired headphones. Enjoy 8 hours of play time with on-the-go listen-while-you-charge mobile charging (4 Hrs on-board + 4 Hrs with the included Charging Clip). Customize your sound settings and save them to your buds with the Jaybird MySound app. Patented secure-fit for ultra comfort, ready for anything you can dish out on the trail, on the streets, in the gym or on the slopes.