- 8 hours of play time a single charge provides 8 full hours of wireless play time.
- Sweat & waterproof fully waterproof (Ipx7) protection for running in any weather conditions.
- Sport fit plus comfortable, versatile design runs over your ears for a secure, sport-specific fit or under for more relaxed situations.
- Comply Ultra foam tips - interchangeable, thermo-reactive tips provide enhanced durability, rich sound, and conform to individual ear canals for a comfortable, secure fit.
- Premium sound with custom EQ uncompromising sound quality that's compatible with the Jaybird app to customize sound EQ and save personal settings to the buds.Response bandwidth: 20Hz - 20kHz
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.