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Sennheiser Momentum True Wireless

In-ear Bluetooth® headphones

6 Reviews

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Item # 143MOMTNTW

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Our take on the Sennheiser Momentum True Wireless

Sennheiser took their time with the Momentum True Wireless headphones, and did it right. When I interviewed Axel Grell — the company's legendary headphone guru — we talked a little off the record. I asked him why Sennheiser didn't have any truly wireless earbuds, noting that it was already a major trend. He answered my question with a question: "would you be willing to wait for a truly wireless model that had the sound quality of Sennheiser's high-grade in-ears?"

Person wearing Momentum True Wireless earbuds

The Sennheiser True Wireless earbuds give you touch control over music and calls. 

Wire-free — and well worth the wait

Sennheiser took their time with the Momentum True Wireless headphones, and did it right. When I interviewed Axel Grell — the company's legendary headphone guru — we talked a little off the record. I asked him why Sennheiser didn't have any truly wireless earbuds, noting that it was already a major trend. He answered my question with a question: "would you be willing to wait for a truly wireless model that had the sound quality of Sennheiser's high-grade in-ears?"

The best-sounding true wireless headphones I've heard yet

Fast-forward to today and we have the 100% wire-free Momentum headphones. There is no connecting cord between the left and right earbud, and music plays wirelessly via Bluetooth. I've spent some time with them, and to my ears they are the best-sounding truly wireless headphones available.

A sound profile based on Sennheiser's best

It makes sense that these headphones sound so good. According to Grell, the driver design is informed by Sennheiser's flagship IE 800 S in-ear headphones, some of the most revered wired in-ears on the planet. While you shouldn't expect quite that level of sound quality, the Momentum True Wireless earbuds do deliver Sennheiser's signature smooth highs, articulate mids, and satisfying bass. They also have a large, "outside-the-head" soundstage with precise imaging. 

My hands-on impression

Since my discussion with Axel Grell, I'd been chomping at the bit to try these earbuds. When I got my hands on a finished sample, I was not disappointed. They arrived packed in a compact charging case lined in designer fabric. It felt as pleasant as it looks — I handed it to my wife and she noted that it was one of the nicer headphone cases I'd ever brought home.

The case opened with a satisfying snap to reveal the sparkling silver earbuds. They looked larger than the average in-ears, but when I got them positioned for listening, they felt ultra-light. If you've never worn wireless earbuds without a connecting cord, it really is very liberating. So for those of us who value sound quality most, it's nice to have a pair of truly wireless headphones with this level of clarity and detail. 

A closer connection to my music

These Momentum True Wireless headphones actually gave me a new appreciation for The 1975's critically-acclaimed album A Brief Inquiry Into Online Relationships. The first time I heard the album, I actually didn't see what the fuss was about. I was admittedly listening through some average car speakers, but I thought it sounded like a muddied mess. 

Through the Momentums, I was drawn deeper into each song. When I could more clearly hear distinct bits in the smorgasbord of sounds — auto-tuned vocals, afro-beat drums, synths, jazz pianos, acoustic guitar riffs, and so much more — everything somehow became more cohesive. It was also easier to pick out background ad-libs and artifacts, plus all these interesting instrument choices the band made throughout. I enjoyed the album so much through these headphones, that I'm almost embarrassed that I initially dismissed it. 

Secure, comfortable fit

One thing I've learned about in-ears: their sound is only as good as their noise isolation. And that is especially true with these headphones. Using the earbuds right out of the box, I couldn't get a proper fit. Sound quality suffered, and I heard what I perceived as distortion in the right ear. 

Fortunately, Sennheiser includes four sizes of soft silicone ear tips to ensure you find a comfortable, secure fit. I found a larger size that kept the earbuds stable and helped block out external sounds. Suddenly they sounded like a whole new pair of headphones!

Momentum True Wireless earbuds in charging case

The compact, fabric-lined charging case looks and feels really nice.

Touch control over music and calls

True wireless headphones are made for people on the go, so Sennheiser included some features that make listening more convenient. Each earbud has a touch panel built in for controlling music and phone calls. You can even activate Siri or Google Assistant with a tap of the right earbud. 

There is a bit of a learning curve involved with the touch controls, but once I got the hang of them they were pretty handy. I didn't have to reach for my phone every time I wanted to adjust the volume. Pro tip: when adjusting the earbuds so they fit properly, grab them by the side — the touch panel is pretty sensitive and you can easily pause your music by accident.  

Charging case banks hours of power

You get about four hours of listening on a single charge. But the included case banks enough power to recharge the earbuds twice while you're on the move. Plus you can pack it neatly inside a bag or purse — with no worries about pulling out a mess of tangled wires when you're ready to use the earbuds.  

Make sound adjustments with Sennheiser's free app

To tweak the out-of-the-box sound, download the free Smart Control app to your Apple® or Android™ device. The app's "emotional equalizer" screen lets you make tonal adjustments based on your mood. Need to hear your surroundings? Transparent hearing modes let you choose how much ambient sound the earbuds let in.  

Product Highlights:

  • 100% wire-free headphones
    • no connecting cord between left and right earbuds
  • IPX4 splash-resistant
  • 7mm dynamic drivers for detailed sound across a wide frequency range
    • spacious soundstage with proper imaging
Wireless audio:
  • Bluetooth 5.0 for wireless music listening and phone calls
    • aptX® and AAC decoding provides high-quality music streaming from compatible devices
    • aptX Low Latency decoding helps sync audio and video on compatible devices
  • free Sennheiser Smart Control app for Apple and Android allows you to adjust settings and customize the sound
    • Transparent Hearing Mode lets you hear external sounds
Battery and charging info:
  • built-in rechargeable batteries offers 4 hours of listening
  • fabric-covered carrying case banks up to 8 hours of power to wirelessly recharge headphones
  • USB-C cable included for charging case
General info and specs:
  • includes 4 sizes of silicone ear tips for a customized, comfortable fit
  • touch controls on each earbud let you answer calls and control music
  • frequency response: 5-21,000 Hz
  • sensitivity: 107 dB
  • impedance: 16 ohms
  • weight: 0.46 ounces (both earbuds)
  • warranty: 2 years
  • Our 60-day money-back guarantee

What's in the Box:

  • Left wireless earbud (M3IETW L)
  • Right wireless earbud (M3IETW R)
  • Charging case (M3IETW C)
  • 4 Pairs of silicone ear tips (1 pair installed)
  • 8" USB charging cable (Type A USB on one end and USB-C on other end)
  • Quick Guide
  • Safety Guide
  • Compliance Information

Sennheiser Momentum True Wireless Reviews

Average Customer Review(s):

(6 Reviews)

Do more research and testing of the product.

Ralph from Perth Australia on 1/21/2019

Not really as good as stated in previous reviews and from years experience using wireless and wired earphones. The controls were found to be too sensitive as to reach desired levels of sound and quality. Volume control is considered poor. In general the product does to a degree do what it professes in a functional sense but these were found to be quite sub standard to many other comparable products in this category. In the value for money stakes they fail miserably.

Pros: They do play.

Cons: Poor value for the money.

Clear and Precise Sound - Comfortable Fir

Case from Phoenix, AZ on 1/20/2019

Crutchfield Customer Review (What's this?)

I am impressed by these ear buds. They fit comfortably and snug and do not fall out during my workout. The sound produced is the best of any wireless ear buds I have owned. You can hear EVERY instrument... all the highs and lows, with just the right amount of bass to get you moving. There is no "tingy" background noise. The sound really comes out when listening to songs with heavy orchestra pieces, those in the rock, classical, and disco genres. Even pieces with heavy computer modification like in progressive dance sound amazing. The equalizer function within the mobile app is easy to use, but a little touchy and can use some improvement. It was not enough of a nuisance to deduct from the star rating. I definitely recommend these ear buds.

Pros: High quality buds and case, Great sound, easy touch controls.

Cons: Equalizer in mobile app is touchy.


Ronald from San Diego, CA on 1/17/2019

Crutchfield Customer Review (What's this?)

great sound and balance.

Pros: there are none. great sound and connection.

Cons: there are none

Perfect in every way

Dave from Mineral Wells, TX on 1/6/2019

Crutchfield Customer Review (What's this?)

Like all previous Sennheiser products I have used in the past these are up to par with others on quality of sound. There is a useful app to customize you sound. The easily connect to any Bluetooth device I have and the comfort is there while wearing. I mostly use them while riding my motorcycle and and have improved the sound on my rides with out sacrificing safety with transparent mode engaged. Extremely happy with all functions of these buds.

Pros: Sound, connectablaty, comfort

Cons: None

Love 'em

Wendell from Henderson, NV on 12/18/2018

I love these Momentum True Wireless earbuds. Finally a pair of wireless earbuds that truly perform. Sound quality is excellent (strong bass and clear highs). The fit is both comfortable and stays in my ears. Calls work well - the call audio goes into both left and right ears (unlike the Bose SoundSport® Free wireless headphones where call audio only goes into one ear). Bluetooth pairing worked the first time (to my Samsung Note 9) and seems stable. I needed to experiment with several of the included different sized ear gels to find the best fit, and it took a bit of experimenting to learn how to best insert/fit these into my ears (a bit of twist after insertion seems to help) - I've found that is necessary for all wireless ear buds I've tried. The Android Sennheiser Smart Control software seems to work well (I was using the Android app). I especially was impressed with the software equalizer. I've tried many different models/brands of wireless earbuds and these are the best (by far) so far. Audio quality is superior when compared to the Apple Airpods. Calls are superior compared to the Bose SoundSport® Free wireless. The only issue I'm still exploring is "transparent mode" which allows you to hear external sounds - I haven't got that to work as expected yet. I only paired with Android (worked well). Overall I am so happy to finally find wireless ear buds that work so well. I just ordered another pair for my family and they appear backordered.

Pros: Sound quality is excellent (strong bass and clear highs). Fit is both firm and comfortable. Bluetooth works well and is stable. I've kept them in my ears for 3 hours and they remain comfortable.

Cons: Hard to find/backordered. These isolate external sounds well so be careful when wearing these when running, walking on streets, etc (not really a con, as this is good in some cases but not in all cases).

Excellent but needs some finish work

Tim from Las Vegas, NV on 12/15/2018

Crutchfield Customer Review (What's this?)

I got these on pre order and have had them for about 36 hours so far. At this point the highlights are: Incredible sound Extremely easy to use Very discreet to wear Very comfortable to wear (4 sizes of silicone tips included) Most features exceed expectations such as auto pause, pairing and touch gestures The cons so far: The transparent hearing almost doesnt work. With the music turned up almost no outside noise comes through. With the music at medium volume you get some outside noise but speech is difficult to understand. For phone calls so far the mic appears to be a bit quiet. I wish i coule leave 4.5 stars because they have been awesome so far, but the simple fact that features that are advertised as a selling point aren't perfected makes me wonder if they pushed them out too early.




Hands-on research

Features and Specs

Fit Style In-ear/Earbud
Earcup Type Closed
Earcup Width x Height 1.005" x 0.923"
Noise-canceling No
Mic For Taking Calls Yes
iPhone Control Yes
Lightning Connector No
Android Control Yes
Frequency Response 5-21k Hz
Sensitivity 107 dB
Impedance N/A
Weight 0.5 ounces
Cord Length None
1/4-inch Adapter Included No
Storage Case
Charging Case Yes
Volume Control Yes
Parts Warranty 2 Years
Labor Warranty 2 Years

Product Research


Overview: The Sennheiser Momentum Truly Wireless (M3 IETW) headphones are two individual ear buds with no connecting wires. They connect to your smartphone or tablet (and to each other) via Bluetooth. Four pairs of silicone ear tips (XS, S, M, L) are included for a comfortable fit. The Truly Wireless headphones come with a charging case for storage, and for recharging the batteries.

Bluetooth: The Momentum Truly Wireless headphones feature Bluetooth version 5.0 which pairs to your phone or audio device in seconds. You can make and receive phone calls and stream audio wirelessly in a range of up to 33' (10 meters), depending upon environmental conditions. The headphones have the following profiles: Headset Profile (HSP), Hands-Free (HFP), Audio/Video Remote Control Profile (AVRCP), and Advanced Audio Distribution Profile (A2DP). If your audio source supports aptX, aptX LL, or AAC, music is automatically played in high audio quality.

Rechargeable Batteries: The Momentum Truly Wireless headphones are powered by built-in 3.7VDC Lithium-Polymer rechargeable batteries. The left earbud's battery has a 60 mAh battery, while the right earbud's battery is 85mAh. In addition, the charging case has a 600mAh battery. The complete charging cycle of the charging case and earphones is approximately 1.5 hours. The battery in the charging case charges via USB-C power (5V, 650 mA) using the supplied cable from a laptop, an AC-powered USB charging port, or a mobile 12-volt USB charging port. Fully-charged batteries in the earbuds provide approximately 4 hours playback. The charging case provides an additional 8 hours of additional playback time to the earbuds.

Phone/Music Controls: Controls for music playback and phone call functions are located on separate earbuds. Both earbuds are equipped with 5/8" diameter touch control panels. The left earbud controls Volume Down, and music playback functions Play/Pause, Next Track, and Previous Track. The right earbud controls Volume Up, and phone call functions Accept call, End Call, Reject Call. Touching both control panels simultaneously lets you pair and connect the earbuds to your Bluetooth mobile device.

Microphones: The Truly Wireless earbuds are equipped with a beam-forming, noise cancellation, dual microphone system. Multiple microphones distributed between the two earbuds are used for both phone calls and noise cancellation.

Voice Prompts: The earbuds provide a voice prompt to confirm certain functions and conditions. Voice Prompts include subjects such as Power ("Power On", "Power Off"), Bluetooth ("Connected", "Pairing", "Pairing cancelled/successful/failed"), Battery Status ("Battery Status" (percent), "Recharge headset"), Phone Calls ("Call Rejected", "Call Ended"), and Volume ("Volume Minimum", "Volume Maximum"). On the Smart Control app, you can change the language of the prompts (8 languages available), choose between voice prompts and beep sounds, or deactivate the status messages.

Smart Control App: In addition to the on-board controls, the Momentum Truly Wireless in-ear headphones can be controlled by Sennheiser's new Smart Control app for Android and iOS devices. The app lets you personalize and enhance the sound to suit your current mood with the Emotional Equalizer. The Transparent Hearing function lets you adjust how much of your surroundings you can hear while wearing the earbuds. You can shut out your surroundings if you want to concentrate on your music, or allow ambient sounds in if you need to listen for announcements, or carry on a conversation with another person, without having to remove the earbuds. Firmware updates for the earphones are also available through the app. The Smart Control app is compatible with iOS devices running version 11.0 and later, and Android devices with version 7.0 and up.


  • Frequency Response: 5Hz - 21kHz
  • Transducer Size: 7mm
  • Total Harmonic Distortion (THD): <0.08%
  • Sound Pressure Level (SPL): 107dB (1 kHz/1mW)
  • Ingress Protection: IPX4 (splash proof)
  • Microphone:
    • Frequency Response: 100Hz - 10kHz
    • Pickup Pattern: 2-mic beam-forming array
    • Sensitivity: 94dB SPL (at 1 kHz)
  • Dimensions:
    • Earbuds: 1.005" (w) x 0.925" (h) x 0.865" (d)
    • Charging Case: 3.095" (w) x 1.371" (h) x 1.759" (d)
  • Weight:
    • Earbuds: 0.2 ounces (left); 0.3 ounces (right)
    • Charging Case: 2.1 ounces

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team. They verify what’s in the box, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

Q & A

Customer Q&A

Crutchfield asked  
Why did you buy this?

Quality [ Carla  Jan 13, 2019 ]
Try to see if there is a true wireless good sound [ Theoharis  Jan 12, 2019 ]
Lots of research on wireless earbud sound quality. These appear to be the best right now. [ Robert  Jan 10, 2019 ]
Majority of reviews indicated these are the best wireless earbuds you can buy. I also chose these because they utilize Bluetooth 5.0. [ Case  Jan 07, 2019 ]
Quality and excellent sound with low tight bass response. [ David  Jan 07, 2019 ]