PRODUCT OVERVIEW Feel your music more. With the Bose QuietComfort Ultra True Wireless Noise Cancelling Headphones, you get breakthrough spatial audio for more natural-sounding music, no matter the source. These wireless earbuds use immersive sound to bring the music from inside your head – right in front of you. And for the noises you don’t want to hear, the QC Ultra Earbuds offer world-class noise cancelation. The CustomTune technology analyzes your ear’s shape and adapts the sound and noise cancelling to it. The innovation doesn’t just stop at the premium sound, the design of these in-ear headphones is a one-of-a-kind experience too. You get nine combinations of eartip and stability band sizes to choose from. And up to six hours of play time (up to 4 hours with Immersive Audio)* keeps your favorite music playing as long as you want. 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.  KEY FEATURES Feel your music more - Breakthrough spatial audio for more immersive listening that makes your music feel more real 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.) Listen longer with up to 24 hours total play time - QC Ultra Earbuds give you up to 6 hours of listening time (up to 4 with Immersive Audio)¹ while the included case holds up to 3 additional full charges² . Pop the buds in the case for up to 2 hours of music from a 20-minute charge.³ World-class noise cancellation and sound shaped to you - The 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 cancelling earbuds and sound that's tailored to you. High-quality earbuds for comfort and stability - Swap between nine potential combinations of eartips and stability bands. 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. Natural-sounding phone calls - Enjoy natural-sounding phone conversations. Noise-rejecting mics and focus on your voice and filter out background noise. They’ll play through both or a single earbud, whatever works for you. A powerful wireless connection with advanced Bluetooth 5.3 - Bose Bluetooth earbuds offer a strong, continuous connection within 30 feet of your device. Choose single- or multi-point to keep your phone, tablet, and work or school computer paired or just focus on one. Different listening modes for different environments - When it’s time to tune in and jam out, use Quiet Mode. 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. Simple touch-free device controls - Wireless earbuds that give you full control. Play or pause music, change the volume, and switch tracks. You can even answer calls and change the noise cancellation level, all without ever touching your phone. Customize your experience with the Bose Music app - Take personalization even further with Adjustable EQ settings in the Bose Music app. Control bass, mid-range, and treble levels as you go. Or use the app to check battery life, customize a shortcut, and manage connected devices. Bose QuietComfort Ultra Earbuds vs. QuietComfort Earbuds II - Bose QuietComfort Ultra Earbuds give you all the best features of the QuietComfort Earbuds II, plus our latest immersive sound technology. Also, unlike the QCE II, the Ultra Earbuds now feature Aware mode for smarter noise cancellation, and connection options like Google Fast Pair. Battery Disclaimers ¹ Testing conducted by Bose with active noise cancelling on and audio playback at a loudness of 75dBSPL. Battery life varies based on settings and usage. ² Testing conducted by Bose by counting cycles of inserting battery-depleted earbuds into a fully charged case and charging to 100%, then resuming audio playback at a loudness of 75dBSPL until battery depletion. ³ Testing conducted by Bose by inserting earbuds with battery depleted into a fully charged case and charging earbuds for 20 minutes, then resuming audio playback at a loudness of 75dBSPL with active noise cancelling on and Immersive Audio off. Battery life varies based on settings and usage. Legal - Bose, Bose Music, CustomTune, QC, and QuietComfort are trademarks of Bose Corporation.