Review: Sennheiser Momentum True Wireless 4

How much is great sound worth to you? Sennheiser’s top wireless earbuds ask that question in more ways than one. The previous version, the True Wireless 3, was praised by reviewers, but some users raised issues like battery drain and connection glitches. The Momentum True Wireless 4 set out to address these complaints with an all-new battery system among “over a dozen major upgrades,” according to Sennheiser.

Within this context, the two earbud dropouts I experienced in my first few days of testing the MTW4 stood out more than the usual new bud jitters. Especially since the latest pair sports the exact same exterior design as the MTW3, which is, in 2024, looking downright chunky compared to the competition. Size aside, a firmware update seems to have fixed those connection woes, and I’ve experienced no other dropouts over multiple days of testing.

One thing that’s never been in question with Sennheiser is sound quality. Even given their superb sonic pedigree, the Momentum 4 caught me off guard with their clarity, their sensitivity, and the sheer sweetness and delicacy with which they render every tone. They pair that with competitive noise canceling and a solid app. The result is a package that’s worthy of a little faith—especially for those who put great sound first.

Not-So-Spyware

If you’re at all familiar with Sennheiser’s long-running Momentum line, you’ll be feeling dé​jà vu with the fourth-gen version. The buds arrive nestled in what looks like the same boxy case from the original 2019 Momentum. It feels downright massive when compared to cases from Apple, Sony, and others. Still, you have to admire Sennheiser’s style, cloaking it with sleek fabric straight out of the James Bond Corduroy Collection.

The buds have morphed over time, but Sennheiser made no exterior changes from 2022’s MTW3 to maintain their “timeless aesthetic.” They certainly look premium with their angled, smoked-chrome housings but, timeless or not, I would have appreciated some ergonomic updates.

The buds barely wedge into my medium-size ears with the default band that flexes around the main housing, but swapping it for the smaller of two spares made them stable and relatively comfy for a few hours at a clip. They still feel bulgy and somewhat invasive, and at 6 grams per side, they don’t quite pull the disappearing trick of Apple’s AirPods Pro (9/10, WIRED Recommends) or other favorites. Four ear tip sizes let you further customize the fit, but those with smaller ears may want to try before you buy.

Plenty of Goodies

Beneath their enameled shells, the MTW4 have undergone a relatively thorough makeover, from their new battery system (and firmware to optimize it) to support for the latest Bluetooth 5.4 protocol and a new low-latency mode for gaming. They’ve also now got dust protection, with an IP54 rating.

The battery is arguably the most important upgrade, which includes a new provider to ensure improved reliability. Playback is rated at a respectable 7.5 hours per charge, and 30 hours total with the charging case. This matched my testing, with the buds keeping pace at around seven to eight hours per charge with noise canceling on.

Call quality has been upgraded, with AI optimization designed to offer advanced clarity via the buds’ new Qualcomm Snapdragon chip. I didn’t notice anything special on my end, but I also never received major complaints from others, even while talking outdoors.