If you mean the documented MOMENTUM True Wireless 4 (MTW4) and CX True Wireless, choose MTW4 if active noise cancellation (ANC), newer Bluetooth and broader codec support matter most. Choose CX True Wireless if you do not need ANC and its features suit your budget and local availability. “CX earbuds” can also mean the separate CX Plus True Wireless, which does have ANC; it is not the same model as CX True Wireless.
This comparison uses Sennheiser’s published specifications, not independent listening or battery tests. Sennheiser’s product range also lists MOMENTUM True Wireless 5, but the detailed specifications covered here are for MTW4. Check the exact generation and CX variant before buying.
Which models are being compared?
The names are easy to mix up. MOMENTUM True Wireless 4 is the specific Momentum generation with detailed specifications in this comparison. CX True Wireless and CX Plus True Wireless are distinct earbuds: CX True Wireless is listed with passive noise cancellation, while CX Plus has ANC.
Sennheiser’s global range listing surfaced MOMENTUM True Wireless 5 as well. Because the detailed specifications discussed below are for MTW4, check the model name on the product listing rather than assuming that a generic “Momentum True Wireless” listing refers to MTW4.
#1 Best Overall
- EXCEPTIONAL AUDIO: Catch details like never before. Designed with a High-Res Audio¹ 24-bit hi-fi codec, the latest Galaxy earbuds maintain the integrity of your favorite audio over Bluetooth.
- TWO-WAY SPEAKER: Enjoy every audio experience to the fullest with two speakers in both Buds, including a tweeter for rich highs and a woofer for deep, full lows.
- HD VOICE: Enjoy clear phone calls with Galaxy Buds4 Pro and Galaxy S26 Series² —they work together to deliver crisp and clear conversations.
- ANC 2.0: Wherever you go, Adaptive Active Noise Cancellation 2.0³ intelligently adapts in real time to provide stronger, smoother noise cancellation wherever you go.
- OPTIMIZED COMFORT: Enjoy that just-right fit, with an improved, ear-hugging design and changeable ear tips.
MTW4 and CX True Wireless compared
| Feature | MOMENTUM True Wireless 4 | CX True Wireless |
|---|---|---|
| Noise control | Hybrid active noise cancellation (ANC). Sennheiser specifications | Passive noise cancellation; no ANC is listed on the product page. Sennheiser product page |
| Bluetooth | Bluetooth 5.4. Sennheiser specifications | Bluetooth 5.2 on a regional Sennheiser listing; confirm the local listing. Sennheiser India product page |
| Listed codecs | SBC, AAC, aptX, aptX Adaptive/Lossless and LC3. Actual use depends on source device and configuration. Sennheiser specifications | SBC, AAC and aptX on a regional Sennheiser listing. Actual use depends on source device and configuration. Sennheiser India product page |
| Manufacturer-stated battery life | Up to 7.5 hours with ANC off, up to 7.0 hours with ANC on, and up to 30 hours total with the case. Sennheiser states the total-playback test condition as iPhone, mid volume, 85 dB. Sennheiser specifications | Up to 27 hours with the case on the product page; a regional listing specifies up to 9 hours in the earbuds and 27 hours total. The regional listing does not state matching test conditions. Sennheiser product page; Sennheiser India product page |
| Dust and water resistance | IP54, rated for dust and splash resistance. Sennheiser specifications | IPX4, listed as splash resistant; this is not the same dust rating as IP54. Sennheiser product page |
| Fit pieces listed | Four ear-tip sizes and three ear-fin sizes, according to Sennheiser’s FAQ. Sennheiser support | Four ear-adapter sizes. Sennheiser product page |
| Charging | USB-C and Qi wireless charging for the case. Sennheiser specifications | Not stated on the cited product details. |
The battery numbers are manufacturer estimates, not results from a controlled, same-condition comparison. The CX figure is also presented differently across Sennheiser’s product listings, so do not treat 30 hours versus 27 hours as a measured real-world advantage.
What changes if you mean CX Plus True Wireless?
CX Plus True Wireless is a separate model with ANC and Transparency Hearing, plus an IPX4 rating. Sennheiser’s product page gives up to 24 hours of play time. Its 2021 comparison article reports up to 8 hours in the earbuds and 24 hours total for CX Plus, versus up to 9 hours in the earbuds and 27 hours total for CX True Wireless. Those are older manufacturer-published estimates, not independent measurements; battery claims can vary by source and conditions.
Rank #2
- Signature Sennheiser Sound, Refined: Experience brilliant, emotionally rich audio with a high fidelity audiophile-grade 7mm TrueResponse driver, meticulously tuned to deliver exceptional clarity, detail, and natural balance at any volume.
- Audiophile Grade Wireless Audio: Advanced Bluetooth codecs including aptX Lossless, aptX Adaptive, and AAC preserve every detail, so music, movies, and games sound immersive, dynamic, and true to the source.
- Exceptional Battery Life: Enjoy up to 40 hours of playtime with on-the-go charging from the case. A replaceable battery extends product lifespan, helping reduce electronic waste while delivering years of premium sound.
- Built For Life: The secure-fitting ergonomic design assures superb wearing comfort and uncompromised audio enjoyment in any environment. Dust- and splash-resistant protection (IP54 rating) lets your audio accompany all your adventures.
- Clearer Calls, Smarter Microphones: Digital beamforming microphones, plus a bone conduction mic, and AI voice isolation keep your voice clear and natural on calls, even in busy environments, at home or on the move.
Sennheiser’s CX Plus product page and CX versus CX Plus comparison article describe the distinction. If ANC is important, compare CX Plus—not the non-ANC CX True Wireless—with MTW4.
How to choose
Choose MOMENTUM True Wireless 4 for ANC and connectivity features
MTW4 is the better-supported match among the two models when you want hybrid ANC, Bluetooth 5.4, or the broader listed codec selection. The codec list only helps when your phone, computer or other source supports the relevant codec and configuration. Sennheiser also lists sound personalization and EQ features in its Smart Control app.
The Tool Desk
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- Note : If the size of the earbud tips does not match the size of your ear canals or the headset is not worn properly in your ears, you may not obtain the correct sound qualities or call performance. Change the earbud tips to ones that fit more snugly in your ear.Specific uses for product : Travel,Sports and Exercise
- Superior sound powered by the TrueResponse transducer and aptX Adaptive for the highest resolution audio
- Customized audio experience via built-in equalizer and pre-sets, including Bass Boost, and Sound Personalization for bespoke audio
- Multipoint enables connection to 2 devices
- Compact, ergonomic design with Silicone ear adapters (XS, S, M, L) and fins (S, M, L) to ensure optimal comfort and a secure fit
Choose CX True Wireless if ANC is not a requirement
CX True Wireless may suit someone who does not need ANC and prefers the CX model’s listed battery estimate or product position. Confirm current local pricing and stock before deciding: the product page showed temporary out-of-stock status in the storefront region returned during retrieval, and availability varies by market.
Choose CX Plus only if that is the CX model you intended
CX Plus adds ANC and Transparency Hearing compared with CX True Wireless, according to Sennheiser’s product information. It has its own battery claim and feature set; do not assume CX True Wireless specifications apply to it.
Rank #4
- Seamless Connectivity & Smart Features: Sennheiser MOMENTUM 4 earbuds wireless Bluetooth 5.4 with multipoint connectivity and customizable touch controls ensure effortless pairing and intuitive operation and wireless convenience
- Adaptive Noise Cancellation & Transparency Mode: The wireless Bluetooth earbuds block distractions with optimized ANC and help you stay aware of your surroundings with low-noise Transparency Mode
- All-Day Comfort & Secure Fit: The true wireless earbuds have an ergonomic design with extra soft silicone ear tips for long-lasting comfort during extended listening sessions
- Long-Lasting Battery & Charging Case: The ear buds have up to 30 hours of playback, extended with the included charging case, long battery life for uninterrupted music and calls on the go
- LE Audio & Auracast Ready: The wireless earbuds noise cancelling let you future-proof your listening with support for LE Audio and Auracast for enhanced audio streaming experiences and music listening
Fit, sound and durability: what specifications can tell you
MTW4’s package includes four ear-tip sizes and three ear-fin sizes; CX True Wireless lists four ear-adapter sizes. Those options do not guarantee comfort or a reliable seal for every ear. Try the included sizes and check the seal, since fit is individual and can affect isolation and listening experience.
Both lines use Sennheiser TrueResponse drivers, but the specifications alone do not establish which sounds better to a particular listener. Sound preference is subjective, and these published details are not a comparative listening test. For durability, note the ratings as stated: MTW4 is IP54 for dust and splash resistance, while CX True Wireless is IPX4 splash resistant; neither rating should be read as a promise that the earbuds are waterproof.
Quick Recap
Best Value
- Signature Sennheiser Sound, Refined: Experience brilliant, emotionally rich audio with a high fidelity audiophile-grade 7mm TrueResponse driver, meticulously tuned to deliver exceptional clarity, detail, and natural balance at any volume.
- Audiophile Grade Wireless Audio: Advanced Bluetooth codecs including aptX Lossless, aptX Adaptive, and AAC preserve every detail, so music, movies, and games sound immersive, dynamic, and true to the source.
- Exceptional Battery Life: Enjoy up to 40 hours of playtime with on-the-go charging from the case. A replaceable battery extends product lifespan, helping reduce electronic waste while delivering years of premium sound.
- Built For Life: The secure-fitting ergonomic design assures superb wearing comfort and uncompromised audio enjoyment in any environment. Dust- and splash-resistant protection (IP54 rating) lets your audio accompany all your adventures.
- Clearer Calls, Smarter Microphones: Digital beamforming microphones, plus a bone conduction mic, and AI voice isolation keep your voice clear and natural on calls, even in busy environments, at home or on the move.
Check the exact product and local listing before buying
- Confirm whether the listing is for MOMENTUM True Wireless 4 or the newer generation shown in Sennheiser’s range.
- Check whether “CX” means CX True Wireless or CX Plus True Wireless; only the latter has ANC among those two CX models.
- Verify local availability, price and specifications. Sennheiser pages can be regional, and stock can change.
- Match codec claims to the devices you use; a supported earbud codec is not necessarily active with every source.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
