The CustomTune intelligent in-ear sound field calibration technology can optimize the in-ear sound field in real time based on different ear canal structures, adjusting sound and active noise-canceling technology to deliver a personalized audio experience.

A combination of 3×3 soft ear tips and sturdy rings allows adjustment to fit both ears according to different ear shapes, ensuring a perfect fit and maximum comfort for every ear.

The Bose QuietComfort Earbuds Ultra feature the second-generation Qualcomm S5 audio platform, delivering an exceptional listening experience that makes you feel fully immersed in sound.