Bose Sound Sport Wireless In-Ear Headphones In-ear wireless headphones designed for rigorous workouts with sweat and weather resistant materials combined with Stay Hear+ tips for comfort and stability. The Lithium-ion battery delivers up to 6 hours per charge to keep you moving. Wireless connectivity Bluetooth and NFC pairing so you can connect to your devices wirelessly. Volume-optimized EQ Gives you balanced audio performance at any volume. Easy controls An inline mic and remote lets you conveniently control volume, skip tracks and take calls, all without reaching for your device. Bose Connect app Makes controlling and switching between multiple devices easy, and continually adds more functionality to your headphones. Tile app Tile makes it easy to find your headphones if they ever go missing. Use the Bose Connect app to update your headphones' software to include Tile. Then, download the Tile app and follow its simple in-app instructions to activate your headphones so that you'll never lose your music.