Bose QuietComfort 35 II vs Bose QuietComfort Ultra Earbuds (2nd Gen)

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QuietComfort 35 II compared with QuietComfort Ultra Earbuds (2nd Gen)

	BoseQuietComfort 35 II	BoseQuietComfort Ultra Earbuds (2nd Gen)
Overview
Released
Released	September 2017	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
Bluetooth codecs
Bluetooth codecs	SBC and AAC	SBC, AAC and aptX Adaptive
Noise cancelling detail
Noise cancelling detail	High, Low and Off settings in the Bose Connect app or via the Action button; defaults to High on power-up; no dedicated transparency mode described in the maker's guide	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	No custom equaliser in Bose Connect (SoundGuys); SBC and AAC codecs confirmed by SoundGuys	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 20 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	Up to 20 hours wirelessly or 40 hours using the supplied audio cable; headphones do not play while charging; analogue listening remains possible with a depleted battery	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	Full charge in up to two hours (current owner's guide); What Hi-Fi reports 15 minutes provides 2.5 hours of wireless listening	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	4.1	5.3
Two devices at once
Two devices at once	Yes	Yes
Headphone cable
Headphone cable	Yes	–
Controls
Controls	Power/Bluetooth slider, volume buttons and multi-function button on the right earcup; left Action button can control noise cancellation; multi-function button accesses the phone's voice control	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	Built-in microphone system for calls and voice assistants; maker's launch announcement describes voice pickup but does not publish a microphone count	Eight microphones in total; AI-based SpeechClarity noise suppression for calls
Fit and ear tips
Fit and ear tips	Around-ear cushions; headband folds and earcups rotate for the supplied carry 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)
Dimensions
Dimensions	SoundGuys reports 235.3 g and 180 × 170 × 81 mm; What Hi-Fi's table gives 240 g; no current maker headphone weight was verified, so the main weight field is left out	–
Water resistance detail
Water resistance detail	No IP rating verified in the maker documents used; owner's guide says not to use near water	IPX4 for the earbuds only
Works with
Works with	Bose Connect app for iOS and Android; two active Bluetooth devices, one audio stream at a time, with eight stored pairings; NFC pairing; SimpleSync with compatible Bose speakers and soundbars; Bluetooth 4.1 confirmed by TechRadar; Google Assistant is not available on iOS according to Bose's current article; current maker product page also lists Amazon Alexa, subject to country and language availability	Bose app for iOS and Android; multipoint connection to two devices; Google Fast Pair on Android; Spotify Tap
Colours
Colours	Black and Silver at launch	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, carry case, USB charging cable and analogue audio cable; micro-USB charging connector; 2.5 mm headphone to 3.5 mm device audio cable (TechRadar)	Earbuds, wireless charging case, eartips (S, M, L), stability bands (1, 2, 3), 30 cm USB-C (A to C) cable, safety sheet