QuietComfort Ultra Earbuds are the ultimate earbud experience. Breakthrough spatialized audio for more immersive listening makes your music feel realer than ever before - no matter the content or source. Bose Immersive Audio takes what you're hearing out of your head and places it in front of you for the most natural listening. And CustomTune technology takes it to another level by analyzing your ear's shape and adapting the sound and world-class noise cancellation so everything hits just as it should. The comfort is shaped to you, too. You get nine combinations of eartip and stability band sizes to find the best fit. And up to 6 hours of play time keeps your favs playing as long as you want to listen (up to 4 hours with Immersive Audio). Plus, the included case holds up to three additional charges. Connect to your devices with advanced Bluetooth 5.3 and keep track of what you have paired in the Bose Music app. It also walks you through setup, lets you customize a shortcut, and access Adjustable Eq settings. Available in Black and White Smoke.Feel your music moreBreakthrough spatialized audio for more immersive listening that makes your music feel realer than ever before - no matter the content or source. World-class noise cancellation and sound tailored to you. And a design that feels so good to wear. Say less. (Listen more.)Immersive audio. Feels more realBose Immersive Audio pushes the boundary of what it means to listen. It spatializes what you're hearing by taking it out of your head and placing it in front of you - putting you in the acoustic sweet spot. Sound so real it's almost like you can reach out and touch it Yes, please. Say hello to the most natural listening experience.World-class noise cancellation and sound shaped to youThe magic of CustomTune technology: it analyzes your ears and adapts the sound and active noise cancelling to their unique shape. The result World-class noise cancellation and sound that's tailored to you. So you can dance harder, focus better, and hear your fav song like it's the first time all over again.Modes for how you want to listenWhen it's time to tune in and jam out, use Quiet Mode to tap into world-class noise cancellation. But sometimes you need to pay attention. That's why Aware Mode allows enough transparency to hear your surroundings or engage in conversation without taking out an earbud. Immersion Mode engages full noise cancellation with Immersive Audio turned on.High-quality earbuds for comfort and stabilityWhile they're designed for all ears, these earbuds are uniquely shaped to yours. And now it's easier to swap between nine potential combinations of eartips and stability bands to help you find the right fit. The soft, umbrella-shaped tips seal off the opening of your ear to reduce outside noises. And stability bands hug the contours of your ears for a snug fit.Go ahead, listen longer with up to 24 hours total play timeQC Ultra Earbuds themselves give you up to 6 hours of listening time (up to 4 with Immersive Audio) while the included case holds up to three additional full charges. And when you're short on time, pop the buds in the case and get up to 2 hours of music from just a 20-minute charge.