RUGGED VERSATILITY The latest evolution of our do-it-all wireless headphones designed for the all-around runner and outdoor athlete-from trail runs and mountain bike rides to summit scrambles and deep powder days, the go-anywhere X4 is as versatile as you are. KEY FEATURES - CUSTOM SOUND EXPERIENCE A crisp, clear and uncompromising soundtrack for your adventure, with fully adjustable EQ in the Jaybird app. BUILT FOR ADVENTURE Fully weatherproof, IPX7 construction to handle adverse conditions and Type-II fun. BARELY-THERE COMFORT Your ears, your headphones. Interchangeable fins and tips offer fine-tuned fit and security. ALL-DAY ENDURANCE Fast-charging, 8-hour battery won't run out of energy before you. |