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Sennheiser Momentum True Wireless

In-ear Bluetooth® headphones

Item # 143MOMTNTW

To my ears, these are the best-sounding truly wireless headphones available.

To my ears, these are the best-sounding truly wireless headphones available.

Discontinued item
3 questions - 8 answers

Item # 143MOMTNTW

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Since 1974

Years of experience making people happy.

About the Sennheiser Momentum True Wireless

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?"
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
  • MFR # 508524

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

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Sennheiser Momentum True Wireless reviews

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<< >>

More details on the Sennheiser Momentum True Wireless

Mark G.

Features & specs

Fit Style True Wireless
Earcup Type Closed
Earcup Width x Height 1.005" x 0.923"
Noise-canceling No
Bluetooth Yes
Bluetooth Version ---
Single-earbud Operation ---
Mic For Taking Calls Yes
Voice Assistant Access
Amazon Alexa No
Google Assistant Yes
Siri Yes
3.5mm No
1/4" No
Lightning No
4.4mm balanced No
XLR4 balanced No
2.5mm No
Other None
Frequency Response 5-21k Hz
Sensitivity 107 dB
Impedance N/A
Weight 0.5 ounces
Cord Length None
Parts Warranty 2 Years
Labor Warranty 2 Years
The Sennheiser Momentum True Wireless replaces these items:

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

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Customer Q&A

3 questions already asked

Are they compatible with the upon?
[ Kageem  May 24, 2020 ]
1 answer
Yes, it work with iPhone and other Apple products.
[ LUONG  May 25, 2020 ]
Is there any way to monitor the charge level of each earbud and the case?
[ Thomas  Feb 20, 2020 ]
3 answers
No, it does not have that option.
[ LUONG  Feb 20, 2020 ]
The case has a led indicator (green, yellow, red). The earbuds you have to use the app. They removed the individual levels in the app a few releases ago so it's not possible to tell the individual level.
[ Jonathan  Feb 20, 2020 ]
The majority of earbuds don't have a monitor They will notify you as you run etc that your battery is getting low
[ Theoharis  Feb 20, 2020 ]
Hi, I am interested in this product, Sennheiser Momentum True Wireless (Open Box). $ 299.99 - $ 60.00 Outlet savings $ 239.99 When you buy these, do you apply the 60-day returns?
[ Reina  Apr 29, 2019 ]
4 answers
No, I did not return this item. All I can tell you, it worth to buy.
[ LUONG  May 08, 2019 ]
No way am I interested. I tried two different headsets. Although the sound quality was great, I had problems with the charge being drained while in the case. Although supposedly Sennheiser was going to introduce a firmware change to fix this problem, I decided it just wasn't worth the potential hassle and stuck with less expensive Apple Airpods. I expected more for $300...and this comes from a long time wired Sennheiser headset customer.
[ Robert  May 08, 2019 ]
No. I'm still using it currently.
[ Jayson Neo Kai  May 07, 2019 ]
Any item in our Open Box Outlet is included in our 60-day return policy! If you would like to discuss further you can contact an Advisor directly by phone (1-800-324-9695) or online chat.
[ Jess  May 07, 2019 ]  Staff

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