GO Air Sport features 8+ hours of playtime in each earbud and 24+ extra hours from the charging case (32+ hours total). Return to the case to recharge the buds, and use the integrated USB cable to charge the case.An IP55 sweat resistance holds up against sweat and dirt, so hit the trails, the gym and more. The ergonomic earhook fits even the smallest ears and stay securely and comfortably in place. Try all sizes of the gel tips to get a secure fit and just GO. Use either earbud independently or use both together. A built-in MEMS microphone in each bud ensures clear calls. Power through your hardest or easiest workout. With 32+ hours of total playtime and our smallest sport fit ever, the GO Air Sport are mighty (and fun). Auto connect to your device to walk, run, HIIT or talk on-the-GO. GO Air Sport features 8+ hours of playtime in each earbud and 24+ extra hours from the charging case (32+ hours total). Return to the case to recharge the buds, and use the integrated USB cable to charge the case. An IP55 sweat resistance holds up against sweat and dirt, so hit the trails, the gym and more. The ergonomic earhook fits even the smallest ears and stay securely and comfortably in place. Try all sizes of the gel tips to get a secure fit and just GO.