Description
The Sennheiser MOMENTUM True Wireless 4 is the fourth generation of a line that has always sold on transducer quality rather than on feature count, and this version adds the plumbing for the next decade of Bluetooth audio: LE Audio and Auracast, both of which the listing marks as arriving through a firmware update rather than shipping enabled. Around that sit adaptive noise cancellation, an anti wind mode, a transparency mode, customizable touch controls, multipoint connectivity and a quoted 30 hours of battery life. The listing went live on February 15, 2024, and at the point this data was captured it carried 5,863 ratings averaging 4.0 out of 5, ranked 10,063rd in Electronics and 1,078th in Earbud and In-Ear Headphones. This is a new unit, not a renewed or refurbished one.
Who this suits
This is a set for someone who cares about how the earbud sounds before they care about what it does. Sennheiser’s TrueResponse transducer system is a single dynamic driver design that the company has iterated across four generations, and the reason to pay flagship money here is the tuning rather than the feature list. The housings use metal, fabric and a leather effect finish, and the case is a fabric wrapped design rather than plastic.
The feature set is complete in the ways that matter daily. Multipoint is stated, so a laptop and a phone can both stay connected. Transparency mode is stated, which lets you hear the room without removing a bud. An anti wind mode is stated, which addresses the specific failure of microphones outdoors. Touch controls are described as customizable, which usually means through the companion app.
Connection: LE Audio, Auracast, and a lossless claim without a codec
Sennheiser states Bluetooth 5.4 with LE Audio and Auracast support, and marks both with an asterisk noting they are available only after a firmware update. That distinction is worth taking seriously rather than reading past. LE Audio is the newer low energy audio architecture that brings the LC3 codec and lower power operation, and Auracast lets a device broadcast audio to many receivers at once, which is the feature that will eventually replace headphone splitters in airports and gyms. Both need support on the phone as well as on the earbuds, and phone support is still uneven.
The lossless claim needs a codec name, and this listing does not give one
The feature copy refers to “lossless audio technology” and claims best in class audio quality. No codec is named anywhere on this listing. That is the single most important omission on the page, because lossless audio over Bluetooth is entirely a codec question. It requires a specific codec supported by both the phone and the earbuds, and the phones that support the lossless capable codecs are a narrow subset of Android devices built on particular chipsets. iPhones support neither aptX in any form nor LDAC, so an iPhone owner connects over AAC and receives lossy audio regardless of what the earbuds are capable of. Until the codec is named and you have confirmed your own phone supports it, treat the lossless language as unsupported by the published specification. Ask Sennheiser which codecs this model negotiates and check your handset against the answer.
Battery: thirty hours, and no split published
The listing quotes up to 30 hours of listening and a quick charge that returns an hour of playback in about 8 minutes. What it does not do is separate the bud runtime from the total with the case, and the specification table is no help: it records both Battery Life and Charging Time as “3E+1 Hours”, which is scientific notation for 30 pasted into two fields that mean different things. A 30 hour charging time is obviously wrong.
Thirty hours is almost certainly the combined figure, since no true wireless earbud plays for thirty hours on its own cell, but that is inference and we will not publish it as a specification. What you need before a long flight is the bud only number with cancellation running, and this listing does not provide it. Ask for it. Adaptive cancellation and, if you enable it, a higher bitrate codec both draw meaningfully more power than the baseline the quoted figure will have been measured at.
Fit, cancellation and a missing water rating
Sennheiser describes extra soft silicone ear tips and a secure fit but does not state how many tip sizes are supplied. On a sealed design that is the specification that decides both perceived bass and how much ambient noise reaches the microphones before cancellation starts work, so it is a real omission on a flagship. The earpiece shape is given as oval, which suits some ear canals considerably better than round.
The cancellation is described as optimized and adaptive, meaning it measures conditions and adjusts continuously, with an anti wind mode for outdoor use. No decibel reduction figure is published and no test standard is named, so there is nothing to verify. What holds true of all cancellation holds here: it works well on constant low frequency noise such as aircraft and train drone, and poorly on speech and other irregular sound. It does not make a cabin silent.
The water rating is simply absent. This listing publishes no water resistance field and no IP code anywhere in its specification. That is not the same as the product having no protection, but it does mean there is nothing published to rely on, so treat these as unrated until Sennheiser states a code. Do not exercise heavily in them on the strength of a guess.
What to compare it against
Within Sennheiser, the MOMENTUM True Wireless 2, two generations back and still a strong tuning is the value comparison, and the MOMENTUM Sport, which trades the fabric case for a rated sports build is the option if exercise is the use. Outside the brand, the Sony WF-1000XM5, which names LDAC explicitly rather than implying a codec is the direct rival and handles the codec question better, the Bose QuietComfort Ultra Earbuds, which prioritize cancellation above all else is the choice for commuting, and the Technics EAH-AZ100, another single driver flagship takes the same sound first position. Our wider coverage sits under wireless earbuds.
Who should buy it and who should not
Buy the MOMENTUM True Wireless 4 if transducer quality is what you are paying for, if multipoint and transparency matter to your day, and if LE Audio and Auracast readiness is worth something to you on a device you plan to keep for years. Do not buy it expecting lossless audio until you have confirmed the codec and your own phone’s support for it, and be aware that on an iPhone you will not get it. Do not buy it if you need a published bud runtime or a published IP code before committing. And do not use a sealed cancelling set for cycling or road running.
