Bose QuietComfort Ultra Earbuds Breakthrough 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.) QuietComfort Ultra Earbuds are the ultimate wireless noise cancelling earbud experience. Bose Immersive Audio pushes the boundary of what it means to listen by taking what you're hearing out of your head and placing it in front of you. It sounds so real it's almost like you could reach out and touch it.Spatial audio earbuds What you hear is placed just in front of you, so it's like you're listening without wearing earbuds.World-class noise cancellation Quiet Mode engages full noise cancellation so you can focus. Aware Mode feels as if you aren't wearing headphones at all.Everything tailored to you CustomTune tech analyzes your ears, adapts to the shape, and auto-adjusts to personalize the sound and noise cancellation.Comfort and stability for any ear Nine possible combinations of eartip and stability bands (now even easier to swap out) ensure the most comfy and stable fit for your ears.Go ahead, listen longer The earbuds play for up to 6 hours (up to 4 hours with Immersive Audio) and the case holds up to 3 additional full charges..