The Bose® Charging Case doubles up as a protective case and a recharging solution for your SoundSport™ Wireless In-Ear Headphones. With an in-built Micro USB connection they can provide up to 18 hours of extra listening time. Charge the case itself via the external Micro USB point. A durable design gives you the confidence to be able to toss it into your bag and know that your SoundSport™ Wireless are protected while they power up. The case reaches full charge in two hours, and if you're short on time, just 15 minutes of charging the earphones gives you an hour of music. The case features two external LED charge level indicators for both the case and the SoundSport™ Wireless.