OpenAudio technology Designed for complete openness to your surroundings. Stay aware of your environment while enjoying your music or calls. Comfortable, all-day wear Enjoy long listening sessions with a comfortable and secure fit. Light-as-air-grip that won’t slip Securely and comfortably wear the earbuds for extended periods without them slipping, making them great for people on the move and when working out. Long battery life Up to 7.5 hours of playtime (up to 4.5 hours with Immersive Audio) or up to 48 hours of standby which ensures uninterrupted listening throughout the day. Breakthrough Bose Immersive Audio Immerse yourself in a captivating audio experience with Bose's advanced sound technology. Simple, satisfying button controls Easily control your music and calls with intuitive button controls. IPX4 ratingWater resistance means you can use the earbuds confidently in challenging weather conditions or during workouts. SimpleSync with compatible Bose soundbars and speakers Seamlessly connect and sync your audio across multiple Bose devices. Flexible joint for stability and comfort Enjoy a secure and comfortable fit that adapts to your movements. Charging case Provides up to 19.5 additional hours of power so that you can keep your earbuds charged on the go for extended listening. Snapdragon SoundExperience high-quality, immersive audio powered by Snapdragon Sound technology. Snapdragon Sound offers Dynamic Spatial Audio for your Bose Ultra Open Earbuds and the idea is to deliver a more immersive experience. Bluetooth 5.3 Enjoy a stable and efficient wireless connection for seamless audio streaming. Bose Music app Customize your audio settings and access additional features through the Bose Music app.