Bose QuietComfort 15 vs Bose QuietComfort Ultra Earbuds (2nd Gen)

Every spec side by side, from each maker's published figures.

Only show differences

Better figure, where one is clearly better

Share comparison

QuietComfort 15 compared with QuietComfort Ultra Earbuds (2nd Gen)

	BoseQuietComfort 15	BoseQuietComfort Ultra Earbuds (2nd Gen)
Overview
Released
Released	2009	June 2025
Sound
Type
Type	Over-ear	In-ear
Noise cancelling
Noise cancelling	Yes	Yes
Transparency mode
Transparency mode	–	Yes
Spatial audio with head tracking
Spatial audio with head tracking	–	Yes
Back
Back	Closed	–
Bluetooth codecs
Bluetooth codecs	None (wired)	SBC, AAC and aptX Adaptive
Noise cancelling detail
Noise cancelling detail	Noise cancellation can be used without the audio cable; the power switch is on the right earcup	Quiet Mode (full noise cancelling) and Aware Mode with an updated ActiveSense that smooths sudden noise spikes; noise cancelling adjustable in the Bose app; CustomTune tailors sound and noise cancelling to your ears
Audio features
Audio features	–	Bose Immersive Audio (Still keeps the virtual speakers in place as you turn your head; Motion lets them follow) and Cinema Mode; up to seven custom modes; adjustable EQ in the Bose app; aptX Adaptive with Snapdragon Sound devices, which Bose says adapts to lossless audio and low latency
Battery
Listening time (maker's claim)
Listening time (maker's claim)	Up to 35 hours	Up to 6 hours
With the case
With the case	–	Up to 24 hours
Wireless charging
Wireless charging	–	Yes
Battery life detail
Battery life detail	Around 35 hours from one replaceable AAA alkaline cell; the indicator flashes with approximately five hours remaining	Up to 4 hours per charge with Immersive Audio on; the case holds three full charges, for 24 hours in total with Immersive Audio off; tested by Bose at 75 dB SPL in Quiet Mode
Charging case
Charging case	–	USB-C (5 V, 1 A) and wireless charging; 680 mAh output capacity; the case charges in up to 3 hours and the earbuds in up to 2 hours
Fast charging
Fast charging	–	20 minutes in the case gives up to 2 hours of playback
Design
Weight (each earbud)
Weight (each earbud)	–	7.3 g
Water and sweat resistance
Water and sweat resistance	–	IPX4
Bluetooth
Bluetooth	–	5.3
Two devices at once
Two devices at once	–	Yes
Headphone cable
Headphone cable	Yes	–
Controls
Controls	Power switch on the right earcup; Hi/Lo level switch on the audio cable for high-output sources such as aircraft systems	Touch surface on each earbud (tap to play, pause or answer calls; double-tap to skip forwards; triple-tap to skip back; swipe up or down for volume; touch and hold for a shortcut to modes, Immersive Audio settings, Spotify Tap or the voice assistant); touch controls can be turned off in the app; in-ear detection pauses audio when an earbud is taken out
Microphones
Microphones	–	Eight microphones in total; AI-based SpeechClarity noise suppression for calls
Fit and ear tips
Fit and ear tips	Around-ear cushions; the earcups rotate inward for storage in the carrying case	Silicone eartips in S, M and L (M fitted) with a guard against earwax build-up; stability bands in sizes 1, 2 and 3 (size 1 fitted)
Case weight
Case weight	–	59.9 g (Bose lists 0.132 lb)
Water resistance detail
Water resistance detail	–	IPX4 for the earbuds only
Works with
Works with	Detachable wired audio cable with 3.5 mm source plug; supplied adapter for dual 3.5 mm aircraft sockets	Bose app for iOS and Android; multipoint connection to two devices; Google Fast Pair on Android; Spotify Tap
Colours
Colours	–	Black, White Smoke and Deep Plum at launch; Bose UK now also sells Midnight Violet and Desert Gold
In the box
In the box	Headphones, carrying case, audio cable, AAA battery and airline adapter; later packages also included a cable with remote and microphone	Earbuds, wireless charging case, eartips (S, M, L), stability bands (1, 2, 3), 30 cm USB-C (A to C) cable, safety sheet