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Bose QuietComfort Ultra Earbuds 2nd Gen, True Wireless Noise Cancelling, Black, 6 Hours Battery, Wireless Charging Case A-JCP Product Id-91669940018 it safeguards your phone againstBose QuietComfort Ultra Earbuds (2nd Gen) deliver an unparalleled audio experience tailored to your ears. Utilizing CustomTune technology, these earbuds analyze the shape of your ears to optimize sound quality and noise cancellation for a truly personalized listening session. The advanced ActiveSense adaptive noise cancelling technology smooths out sudden spikes in ambient sounds, ensuring uninterrupted focus whether you choose Quiet Mode for full