The Ultra Open Earbuds offer a brilliant blend of immersive audio, all-day comfort, and a cuff-like, open-ear design that lets you hear your surroundings while enjoying rich, private sound. Powered by OpenAudio™ technology, they’re perfect for staying aware while you move through your day — from busy streets to casual conversations. Designed with a sleek, soft silicone hinge, these earbuds flex with you for a secure, barely-there fit that’s both stylish and stable. Whether you're running errands or hitting the trails, it feels like your favorite artist is right there beside you. Key Features: OpenAudio™ tech – Delivers rich, focused sound without blocking your ears. Cuff-like open-ear fit – Keeps you connected to your environment. Lightweight & secure – Comfortable, flexible silicone hinge adapts to your movements. Up to 7 hours of battery life (4 with Immersive Audio or Auto Volume)– Plus an extra 19.5 hours from the charging case. Bluetooth® multipoint – Seamlessly connect to two devices at once. Durable & water-resistant – Built for real-world wear and movement. Bose Music app – Customize settings, EQ, listening modes, and updates. SimpleSync™ compatible – Pair with select Bose speakers or soundbars. All the awareness of open-ear listening. All the quality you expect from Bose. Specifications: Headphone Fit: Open Ear Microphone: Built-in Microphone Noise Cancelling: No Water Resistant: IPX4 Dimensions (Single Bud): H0.73" x W0.67" x D1.07" (0.014lb) Dimensions (Case): H1.65" x W2.56" x D1.04" (0.097lb) Product Material: Plastic (PC-ABS), Metal, Silicone, Gold Plating Product Case Material: Plastic (Hard) Rechargeable: Yes Battery Life: 7 hrs Battery Charge Time: 1 hr Charging Interface: USB C Port Wireless Connectivity: A2DP Bluetooth Audio Streaming, Bluetooth, Bluetooth Low Energy, HFP Bluetooth, Wireless Connectivity, AAC Bluetooth, SBC Bluetooth