Bose QuietComfort 35 II vs Sennheiser MOMENTUM 3 Wireless

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QuietComfort 35 II compared with MOMENTUM 3 Wireless

	BoseQuietComfort 35 II	SennheiserMOMENTUM 3 Wireless
Overview
Released
Released	September 2017	September 2019
Sound
Type
Type	Over-ear	Over-ear
Noise cancelling
Noise cancelling	Yes	Yes
Transparency mode
Transparency mode	–	Yes
Driver size
Driver size	–	42 mm
Back
Back	–	Closed
Bluetooth codecs
Bluetooth codecs	SBC and AAC	SBC, AAC and aptX
Lossless over USB-C
Lossless over USB-C	–	Yes
Drivers
Drivers	–	Dynamic, closed-back 42 mm transducers; 6 Hz–22 kHz; 118 dB SPL at 1 V and 1 kHz via cable; THD < 0.3% at 1 kHz and 100 dB SPL
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	Four microphones; three selectable cancellation modes and Transparent Hearing
Audio features
Audio features	No custom equaliser in Bose Connect (SoundGuys); SBC and AAC codecs confirmed by SoundGuys	aptX Low Latency in addition to the listed codecs; equaliser in the Sennheiser Smart Control app; Tile tracking
Battery
Listening time (maker's claim)
Listening time (maker's claim)	Up to 20 hours	Up to 17 hours
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	Built-in 600–700 mAh lithium-polymer battery; 17 hours with Bluetooth and ANC on; approximately three hours to charge over USB-C
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	–
Design
Weight
Weight	–	305 g
Bluetooth
Bluetooth	4.1	5.0
Two devices at once
Two devices at once	Yes	–
Headphone cable
Headphone cable	Yes	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	Three playback and call buttons; dedicated voice assistant button; Auto On/Off when folding; Smart Pause wear detection; NFC pairing
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	Two-microphone beamforming array for calls
Fit and ear tips
Fit and ear tips	Around-ear cushions; headband folds and earcups rotate for the supplied carry case	Circumaural sheepskin leather ear pads, padded headband, stainless-steel sliders and folding hinges
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	–
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	Passive analogue audio by cable at 100 ohms, 470 ohms in active mode; digital audio over USB-C from a computer or mobile device
Colours
Colours	Black and Silver at launch	Black, Sandy White
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)	Headphones, USB-C cable, USB-C to USB-A adaptor, 2.5 mm to 3.5 mm analogue audio cable, carry case, quick guide and safety guide