Breakthrough spatialized audio personalized sound and world-class noise cancelling. Bose QuietComfort Ultra Wireless Earbuds Noise Cancelling Bluetooth Headphones are the ultimate earbud experience. Tap into a more immersive listening experience that makes your music feel more real than ever before. The QC Ultra Noise Cancelling Earbuds also feature CustomTune technology that adapts the sound to your ear’s unique shape for personalized sound. The QuietComfort Ultra Earbuds will give you the perfect fit with nine combinations of eartip and stability band sizes. Enjoy your favorite music longer with six hours of listening time and the included case holds up to three additional charges too. Get a strong connection to your paired devices with Advanced Bluetooth 5.3 and the Bose Music App helps you keep track of what you have paired. It also walks you through the setup and helps you customize your controls for the best listening experience.