The Bose Ultra Open Earbuds combine complete openness to your surroundings with OpenAudio technology, delivering rich, private sound only you can hear. Get your run on, flirt with a stranger, go all day. Do whatever your thing is and pause for nothing. Designed for all-day wear, you'll put these earbuds on and never want to take them off. With 7.5 hours of play time and 48 hours of standby, you're equipped with the power of long-lasting battery life. Plus, the included charging case provides an extra 19.5 hours of power, making it perfect for on-the-go charging. Bose Immersive Audio spatializes music so you're not only listening to the music, you're in it. Simple, satisfying button controls make it super easy to manage your music and switch between stereo and immersive modes. Enable Auto Volume in the Bose App to keep your music audible even as the volume of your surroundings change. With an IPX4 environmental rating for water resistance, the Bose Ultra OpenEarbuds can handle getting splashed on, dripped on, and sprayed on. Enjoy a private listening experience with SimpleSync, which allows you to seamlessly connect your Bose Ultra Open Earbuds to Bose soundbars andspeakers. Snapdragon Sound Certification for Android makes for an even better listening experience for Android device users. Advanced Bluetooth 5.3 keeps a strong connection for up to 30 feet. The Bose Music app gives you access to adjust EQ settings, manage Bluetooth connections, check battery life, customize a shortcut, and more.