QuietComfort Ultra Bluetooth Earbuds (2nd Gen) - Immersive Noise

Our review of the QuietComfort Ultra Bluetooth Earbuds (2nd Gen) finds them best suited to listeners who put noise control and personalised sound first. The single biggest reason to buy is the combination of CustomTune technology and the improved in-ear noise cancellation: together they deliver consistently immersive audio and fewer distractions during commutes, work sessions, or focused listening. Battery life and a wireless charging case keep them practical for daily use, while Bluetooth multipoint makes switching between phone and laptop seamless.

Key Features

• CustomTune technology: Analyses ear shape and adapts the sound to provide personalised audio that preserves detail and deep bass.
• World-class noise cancellation: ActiveSense smooths sudden sounds so music and calls remain clear even in noisy environments.
• Immersive Audio: Spatial processing places audio beyond the ears for a wider, more natural listening experience.
• Secure fit and stability: Nine eartip and stability band combos help users find a snug seal that reduces outside noise and stays comfortable.
• Clear phone calls: Noise-rejecting mics with AI suppression make voices easier to hear by filtering wind and background sound.
• Wireless charging case: Provides up to three full charges and supports wireless recharging for convenient daylong use.

Who It's For

These earbuds suit daily commuters, remote workers, and music fans who want strong in-ear noise cancelling and personalised sound. The combination of Quiet Mode, Aware Mode, and Immersion Mode makes them useful for focused listening, safe outdoors awareness, or cinematic tracks that benefit from spatial audio.

People who prioritise very long single-session battery life or who need an IP waterproof rating beyond splash resistance should look elsewhere; the IPX4 rating protects against sweat and light splashes but is not designed for heavy rain or submersion. Also, listeners who prefer a simpler, no-app experience may miss the customization available through the Bose app.

Pros & Cons

Pros

• Excellent personalised sound thanks to CustomTune and strong in-ear noise cancellation for focused listening.
• Immersive Audio creates a natural, spacious presentation that enhances many genres.
• Bluetooth multipoint and a wireless charging case add convenience for device switching and daily charging.
• Clear calls with noise-rejecting mics and AI background suppression improve voice clarity outdoors.

Cons

• Battery lasts up to 6 hours per charge in Quiet or Aware Mode, which may be limiting for very long travel days.
• IPX4 splash resistance is useful for sweat but not suitable for heavy exposure to water.

Specifications

Product	QuietComfort Ultra Bluetooth Earbuds (2nd Gen)
Battery life	Up to 6 hours per charge (Quiet/Aware), up to 4 hours with Immersive Audio
Charging case	Holds up to three full charges; wireless charging capable
Ingress protection	IPX4 splash resistance
Connectivity	Wireless Bluetooth with multipoint
Microphones	Noise-rejecting mics with AI-based background noise suppression
Fit options	Nine eartip and stability band combinations

Our Verdict

These QuietComfort Ultra earbuds are a strong pick for anyone who wants top-tier in-ear noise cancelling and personalised sound tuning in a comfortable, secure fit. They balance advanced features like Immersive Audio and multipoint Bluetooth with a practical wireless charging case, making them good value for users who prioritise audio quality and distraction-free listening.

Frequently Asked Questions

How long does the battery last?
Up to 6 hours per earbud in Quiet or Aware Mode and about 4 hours with Immersive Audio enabled; the case provides up to three full charges.

Can I use one earbud at a time?
Yes, calls and music work with either a single earbud or both, giving flexible listening and call options.

Is there an app for tuning?
Yes, the Bose app delivers software updates and lets you access features like CustomTune and noise control settings.