8 hours of play time a single charge provides 8 full hours of wireless play time; Charging time: 2 Hrs Sweat & waterproof fully waterproof (Ipx7) protection for running in any weather conditions; Driver size: 6 mm 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