Sennheiser Momentum True Wireless 4

Driver

7mm TrueResponse dynamic: class-leading sound

Codecs

aptX Lossless / Adaptive, LC3, AAC, SBC (Snapdragon Sound)

Battery

7 hrs ANC on; 30 hrs total with case; Qi wireless

Noise cancelling

Hybrid adaptive: good, but behind Sony/Bose

Bluetooth

5.4 with LE Audio / Auracast; multipoint (2 devices)

Water resistance

IP54 (dust & splash)

App / EQ

Smart Control: full parametric EQ + fit test

Warranty

2-year (longer than Sony/Apple/Bose/Technics)

Audio is the event. The 7mm TrueResponse drivers earn the highest sound marks in the mainstream class, aptX Lossless and Adaptive give compatible Android phones the widest codec menu on this page, and the parametric EQ is deep enough to genuinely re-voice the earbuds. Battery holds up its end at 7 hours with ANC on, 30 with the case. The rest of the job is where it slips: noise cancellation is good but a clear step behind Sony and Bose, and the microphones are the recurring knock. SoundGuys was direct about it: “The mic performance is well below what we're used to for higher-tiered TWS earbuds.” Owner reports say the same thing less politely. This is a sound-first earbud, the leader on that axis, and honest about nothing else being the point.

Metallic accents and an IP54 rating give it a premium feel; the practical problem is bulk. The housing is chunky, the circular nozzles seal poorly in smaller ears, and many owners need the fin tips to keep them planted. On the reassurance side, Sennheiser says the battery-supplier issue that hurt the previous generation is fixed, added a Battery Protect mode to slow degradation, and backs the buds with a 2-year warranty, the longest in this group and a real differentiator on a sealed-battery product. Minor firmware connectivity quirks have been reported and are fixable over the air.

Forget the $300 sticker; the MTW4's real price is its sale price, and it is on sale more often than not. At $180 to $200 you are getting the best sound in the class, the deepest EQ, hi-res codecs, and double the usual warranty for mid-range money, a genuine bargain if audio fidelity is what you are paying for. Just check your phone before you leap: the headline codecs need a Snapdragon Android device, and an iPhone gets plain AAC.

Verbatim owner and reviewer comments gathered during our research, linked to where we found them. They are not our words, which is the point.

Listeners who choose earbuds the way they choose speakers: by sound. Especially Snapdragon Android owners who can light up aptX Lossless, tinkerers who will actually use a parametric EQ, and anyone who values a 2-year warranty on a product whose battery is the known weak point.

Heavy callers, first and loudest: between the critic measurements and the owner reports, these are not the earbuds to run a workday's calls through (the Technics or AirPods Pro 3 are). The same goes for ANC maximalists, smaller ears, and iPhone users who cannot reach the hi-res codecs that justify the pick.