You can now run free with your music in the mountains and beyond. Jaybird RUN delivers four hours of bulletproof, sweat-proof true wireless music no wires, no worries. You get a secure comfort-fit, no matter the shape of your ear, with interchangeable tips and fins. Once you find your fit, you'll feel so free that you'll forget you're wearing earbuds. Sweat all you want, push hard in the rain, and get muddy. Jaybird RUN is sweat-proof and water-resistant. Pump up the bass or crank the treble - you control how your music sounds. The Jaybird app can also help you locate your buds if they go missing - we've covered all your bases. You don't have to worry about running out of juice with 12 hours of portable battery life. RUN buds deliver four hours of music on a single charge, and the charging case provides an additional eight hours. A five-minute quick-charge gives one hour of play time, so you never have to hit the trail without your music. Has waiting for a call ever stopped you from hitting the trail Forget about that. Blast music and take calls when you need to, even while you're working up a sweat.