PRODUCT OVERVIEW:Bose QuietComfort Ultra Earbuds are the ultimate wireless noise cancelling earbuds for a truly immersive listening experience. These high-quality wireless earbuds feature breakthrough spatialized audio for a deeper level of immersion that makes your music feel more real than ever before — no matter the content or source. Bose Immersive Audio pushes the boundary even further and takes what you’re hearing out of your head and places it in front of you for the most natural listening in a pair of spatial audio earbuds. And Bose 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 in your noise cancelling earphones. The comfort is shaped to you, too. With these Bose noise cancelling earbuds, you get nine combinations of eartips and stability band sizes to find the best fit. And up to 6 hours of playtime keeps your faves playing as long as you want to listen (up to 4 hours with Immersive Audio). Plus, the included charging case holds up to three additional charges and a quick 20-minute charge gives you up to 2 hours of additional play time. These bluetooth wireless earbuds also feature advanced Bluetooth 5.3 so you can listen to your favorite tracks up to 30 feet away. Keep track of everything paired to the bluetooth earbuds using the Bose Music app which can also walk you through setup, lets you customize a shortcut, check battery levels, and access Adjustable EQ settings. Feel your music more with Bose QuietComfort Ultra Wireless Earbuds.KEY FEATURESSPATIAL AUDIO EARBUDS - Tap into a deeply immersive listening experience that places the audio directly in front of you and makes your music feel more real than ever beforeWORLD-CLASS NOISE CANCELLATION - CustomTune technology analyzes each ear and adapts sound so the active noise cancelling earbuds offer a premium listening experience that’s custom tailored just for youCUSTOMIZABLE FIT FOR ALL DAY COMFORT - Swap between nine soft eartips and stability bands to find the perfect fit that feels snug and comfortable for those extra-long listening sessions3 LISTENING MODES - Focus with world-class noise cancellation in Quiet Mode, hear your surroundings in Aware Mode, and engage in full noise cancellation and Bose Immersive Audio using Immersion ModeLONG-LASTING BATTERY - These Bluetooth noise cancelling earbuds give you up to 6 hours of listening time (up to 4 with Immersive Audio), and a 20-minute charge gives you up to 2 hours of additional play timeCLEAR CALLS, EASY CONTROLS - Noise-rejecting microphones filter out background noise for clearer calls and the intuitive touch controls let you easily change the volume, skip songs, switch modes, and answer callsLISTEN WITH ONE EARBUD - Answer calls or play your favorite music through both or a single earbud, whatever works best for you.FIND YOUR FIT - Experiment with different eartip and stability band sizes to find your optimal fit, providing a gentle seal and a comfortable, stable experience. Eartip and stability bands can be mixed and matched. XS and XL eartips and stability bands are available and sold separately