8 HOURS OF PLAYTIME: A single charge provides 8 hours of wireless play time - plenty of power for a full day outside.

SWEATPROOF & WATERPROOF: Sweat-proof and waterproof (IPX7) protection for gym and fitness workouts and running in all weather conditions.

SPORT-FIT PLUS: Comfortable headphone design runs over your ears for a secure sport fit or under for more relaxed situations.

COMFORTABLE FIT: Interchangeable Comply Ultra thermo-reactive tips provide enhanced durability rich sound and conform to individual ear canals for a comfortable secure fit.

PREMIUM SOUND: The Jaybird app provides Custom EQ allows athletes to customize sound EQ and save personal settings to the buds.

MUSIC & CALLS: Headphones allow users to manage phone calls and control and listen to music without interrupting gym workout.

The x4 are Our do-it-all Bluetooth wireless sport headphones for the all-around runner and outdoor athlete-comfortable rugged and fully waterproof to tackle any run ride or trail in any conditions