Make every song unforgettable with QuietComfort Ultra Earbuds 2nd Gen, delivering premium, personalized audio and the most advanced in-ear noise cancellation from Bose. CustomTune technology adapts sound and Anc to your unique ear shape for deeper immersion and richer detail. Switch between Quiet, Aware, and Immersion Modes with spatial audio that brings music and movies to life. Enjoy a secure, comfortable fit with nine tip and band combinations, crystal-clear calls with Ai noise filtering, up to 6 hours of playtime plus 24 with the case, wireless charging, and seamless Bluetooth multipoint connectivity for effortless listening all day.