Bose SoundSport Wireless Sports Earbuds are In-ear wireless headphones designed for rigorous workouts with StayHear+ earbud tips for comfort and a secure fit. They're sweat, weather and water resistant to fit your active lifestyle. Wireless Connectivity: Bluetooth and NFC pairing connects your devices wirelessly. Volume-optimized EQ gives you balanced audio performance at any volume. Easy Headphone Controls with an inline mic and remote lets you conveniently control volume, skip tracks and take calls, all without reaching for your device. Lithium-ion battery delivers up to 6 hours per charge. The Bose Connect app makes controlling and switching between multiple devices easy, and continually adds more functionality to your headphones.