Bose SoundSport charging case. Forgot to charge your SoundSport wireless headphones? With the SoundSport charging case, you can charge them on the go, anywhere, anytime. The built in battery provides up to 18 hours of extended listening time. The case's compact, durable design protects your headphones as they charge, so you can just toss them in your bag and go. Running short on time? Just a quick 15 minute charge gives you up to 1 hour of music. The case reaches full charge in less than 2 hours. It even features LED battery indicators for both the headphones and the case, so you're never left guessing.