SPATIAL AUDIO EARBUDS: Tap into a profoundly deep audio experience that places the sound right ahead of you to make your favorites feel lifelike before TOP-TIER NC: CustomTune tech examines each side and adapts audio so that the active noise cancelling earbuds offer a high-quality listening session custom tailored just for you ADAPTABLE WEAR FOR HOURS OF COMFORT: Switch between multiple soft earbuds and security bands to achieve the ideal comfort feeling cozy and easy during those extra-long listening hours 3 AUDIO PRESETS: Concentrate with top-tier NC in Quiet Mode, listen to your environment with Aware Setting, or immerse within full noise cancellation with Bose Immersive Audio using Deep Setting EXTENDED BATTERY: These Wireless NC earbuds provide you around 6 hours of play duration (around to 4 using Dense Sound), plus 20-minute charging gives you around 2 hours of additional listening time CRISP CALLS, SIMPLE INTERFACE: Noise-rejecting mics eliminate background noise for clearer talks, and the easy-to-use touch controls allow you to easily change the volume, skip tracks, swap settings, and take calls LISTEN WITH A SINGLE EARBUD: Answer calls or play your favorite music using both or just a single piece, whatever works best suited for you FIND YOUR FIT: Experiment with different eartip plus stability band measures to discover your optimal fit, ensuring a soft seal and a cozy, stable experience. Ear and stability bands are mixed and matched. XS and XL eartips plus stability bands are available and are available separately.