Bose Ultra Open Ear Headphones, Bluetooth Wireless Earbuds with Charging Case offer OpenAudio technology Rich, private sound only you can hear Comfortable, all-day wear Light-as-air-grip that won?t slip Flexible joint for stability and comfort Up to 7.5 hours of play time (up to 4.5 hours with Immersive Audio)* or up to 48 hours of standby.*** Charging case provides up to 19.5 additional hours of power.** Breakthrough Bose Immersive Audio Simple, satisfying button controls Auto Volume in the Bose App keeps music audible even as the volume of surroundings change IPX4 environmental rating for water resistance Seamlessly connect your Bose Ultra Open Earbuds to Bose soundbars and speakers Snapdragon Sound Certification for Android Advanced Bluetooth 5.3 up to 30 feet Available in Black or White Smoke The Bose Music app gives you access to adjust EQ settings, manage Bluetooth connections, check battery life, customize a shortcut, and more Note: Up to 7.5 hours of play time-Testing conducted by Bose with audio playback at a loudness of 75 dBA. Battery life varies based on settings and usage Note: Up to 19.5 hours of power -Testing conducted by Bose by inserting battery-depleted earbuds into a fully charged case, charging to 100% (or until the case battery was depleted), playing audio at a loudness of 75 dBA until earbud battery depletion, and repeating until case battery depletion Note: Up to 48 hours of standby-Testing conducted by Bose by removing fully charged earbuds from the case, connecting to a phone with no content playing, and maintaining connection until earbud battery depletion