The Bose SoundSport Wireless In-Ear Headphones in black are designed to keep up with your active lifestyle. With Bluetooth and NFC tap technology, these headphones can pair with up to two devices, allowing you to easily switch between them. The proprietary StayHear+ eartips conform to the natural shape of your ears for a secure and comfortable fit, making them suitable for even the most vigorous exercise routines. In addition to their comfort and stability, these headphones also offer volume-optimized EQ, ensuring that the frequency response stays balanced and even at any volume. The sweat- and water-resistant construction, which meets the IPX4 industry standard, ensures that these headphones can withstand the demands of your active life. The lithium-ion battery is rechargeable via USB and provides up to six hours of continuous playing time. With an on-board microphone and inline remote, you can easily control volume, skip tracks, rewind, answer/reject phone calls, and more. The Bose SoundSport Wireless In-Ear Headphones come with a carrying case, clothing clip, USB charging cable, and a set of eartips in various sizes. They are also compatible with the Bose Connect App, allowing you to manage your device pairings with ease. Whether you're sweating it out in the gym or running through the rain, these sport earphones are built to keep you moving every step of the way.