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Sennheiser HD 4.50 BTNC

Over-ear wireless noise-canceling headphones

Item # 143HD45BTN

I think of noise cancellation and Bluetooth as the "peanut butter and chocolate" of headphones.

I think of noise cancellation and Bluetooth as the "peanut butter and chocolate" of headphones.

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About the Sennheiser HD 4.50 BTNC

Feature-packed headphones that fit in tight budgets

I think of noise cancellation and Bluetooth as the "peanut butter and chocolate" of headphones. Each is great on their own, but they're even sweeter when you put them together. The Sennheiser HD 4.50 BTNC wireless headphones offer both at a reasonable price. Music plays wirelessly from your phone, while Sennheiser's NoiseGard™ technology cancels out extraneous sounds around you. 

Feature-packed headphones that fit in tight budgets

I think of noise cancellation and Bluetooth as the "peanut butter and chocolate" of headphones. Each is great on their own, but they're even sweeter when you put them together. The Sennheiser HD 4.50 BTNC wireless headphones offer both at a reasonable price. Music plays wirelessly from your phone, while Sennheiser's NoiseGard™ technology cancels out extraneous sounds around you. 

My main takeaways — big bass and a firm fit

If you like deep bass from your headphones, the Sennheiser 4.50 BTNC headphones deliver. You get lots of powerful low end, for sure. The highs and mids are there too, but these headphones will especially satisfy those who prefer music with serious punch.

Their fit is a little too snug for my taste. But they feel light to wear, and I know some people — my wife for example — prefer the tighter fit. These headphones certainly won't fall off as you move around. I thought the no-slip grip on the headband was a nice touch — it has a soft, pleasant feel.  

 — Jeff Miller, Crutchfield headphone guy

Sennheiser 4.50 BTNC wireless headphones, folded up

The Sennheiser HD 4.50 BTNC headphones sport a no-frills, grown-up look and fold into a travel-friendly bundle.

Long battery life for travel

These headphones have a solid battery life. You get up to 19 hours of wireless music playback on a full charge, and that's with noise cancellation. You should get through most flights just fine — without scrambling to find a charging outlet at the airport.

Earcup controls for listening and phone calls on the go

Buttons and sliders on the right earcup control music playback, Bluetooth, and noise-canceling functions. They were a little tricky to master at first, but I got the hang of them pretty quick. One of the buttons even controls phone calls, so you can answer and talk as you move along.  


Product highlights:

  • over-the-ear, closed-back design
  • built-in Bluetooth 4.0 for wireless music listening and phone calls
    • aptX® decoding provides high-quality music streaming from compatible devices
    • NFC-compatible for one-touch pairing with compatible devices
  • NoiseGard technology provides active noise cancellation
  • rechargeable battery provides up to 19 hours of wireless use with noise cancellation
    • up to 25 hours of wireless use with noise cancellation "off"
  • 32mm drivers deliver clear sound tuned for strong bass
  • earcup buttons offer control over music, calls, and noise cancellation
    • built-in microphone for phone calls
  • folding design for portability
  • durable headband with soft, padded grip
  • ergonomic, oval-shaped earpads
  • free Captune app for Apple® and Android™ allows you to adjust settings and view headphone battery life status on your phone
    • select from preset sound modes or customize your own setting
  • detachable cable with angled 3.5mm plug for wired listening
  • storage pouch
  • frequency response: 18-22,000 Hz
  • sensitivity: 113 dB
  • impedance: 18 ohms
  • warranty: 2 years
  • Our 60-day money-back guarantee
  • MFR # 506783

What's in the box:

  • Over-ear wireless headphones
  • 58" Audio cable with right-angled 3.5mm plug
  • 42" USB charging cable (Type A USB on one end and Micro-B USB on other end)
  • Soft cloth storage pouch
  • Quick Guide
  • Safety Guide
  • Feedback card

Featured video:

Customer reviews

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Sennheiser HD 4.50 BTNC Reviews

Average Customer Review(s):

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Crutchfield response

More details on the Sennheiser HD 4.50 BTNC

Mark G.

Features & specs

Fit Style Over-the-ear
Earcup Type Closed
Earcup Width x Height 3.033" x 3.37"
Noise-canceling Yes
Bluetooth Yes
Mic For Taking Calls Yes
iPhone Control Yes
Lightning Connector No
Android Control Yes
Frequency Response 18-22k Hz
Sensitivity 113 dB
Impedance 18 Ohms
Weight 8.4 ounces
Cord Length 58"
1/4-inch Adapter Included No
Volume Control Yes
Parts Warranty 2 Years
Labor Warranty 2 Years

Product Research


Overview: The Sennheiser HD 4.50BTNC over-ear wireless headphones feature NoiseGard active noise cancellation as well as Bluetooth to give you the freedom to listen to your favorite music anywhere you want without the distraction of ambient noise. The HD 4.50BTNC headphones come with a USB charging cable, a straight audio cable, and a soft storage pouch.

NoiseGard: The HD 4.50BTNC Wireless headphones feature NoiseGard Active Noise Cancellation to shut out unwanted ambient noise and let in only your music. With a closed-back design, the headphones block much of the outside noise from your environment. NoiseGard uses two small microphones on the outside of the ear cup to pick up the remaining noise and generate an opposite noise-canceling sound wave. All you hear is your music with all of its detail.

Bluetooth: The HD 4.50BTNC headphones are compliant with the Bluetooth 4.0 standard, and have the following profiles: HFP (Hands-Free Profile), HSP (Headset Profile), AVRCP (Audio Video Remote Control Profile), and A2DP (Advanced Audio Distribution Profile). In addition, aptX audio coding provides high quality audio that is comparable to a wired connection. You can pair the headphones with most Apple and Android Bluetooth devices, including those with NFC (Near Field Communication).

Battery: The Bluetooth function is powered by a 3.7-volt 600mAh Lithium-Polymer rechargeable battery. The battery charges in approximately 2 hours using the supplied Micro USB charging cable. A full charge supplies enough power for 25 hours of wireless listening, or 19 hours with Bluetooth and NoiseGard. The remaining battery level can be monitored through the flashing LED and voice prompts. The battery life may also be displayed on the screen of your smartphone or device.

On-board Controls: The HD 4.50BTNCs have built-in controls on the right ear cup for power, volume, and music/phone call control. Music controls include play/pause, skip to next track, skip to previous track, fast forward, and fast reverse. Phone controls include accept/end a call, reject call, call on hold, and toggle between 2 calls. Established calls can be transferred from the headphones to the smartphone by turning off the Bluetooth connection. Using the Voice Control function of your phone, you can make a call by speaking a command.

Audio Cable: The included 58" audio cable lets you listen to your music when the battery is exhausted, or when you cannot, or choose not to, use Bluetooth. The cable terminates into a slender right-angled 3.5mm plug that is compatible with most smartphone cases. The cable does not have an in-line remote, and the on-board controls do not work when the power is off.


  • Frequency Response: 18 Hz to 22 kHz
  • Impedance: 18 Ω
  • Sound Pressure Level (SPL): 113 dB (1 kHz, 1 Vrms)
  • Total Harmonic Distortion (THD): <0.5 % (1 kHz, 100 dB SPL)
  • Dimensions (Ear Cup): Width 3.033", Height 3.7", Depth 1.85"
  • Weight: 8.4 ounces (8.9 oz. with cable)

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Customer Q&A

Crutchfield asked: Why did you buy this?
Best Buy for the buck! [ Maryanne  Feb 04, 2019 ]
Wall Street Journal article recommended, plus know Sennheiser brand. Bose is too expensive. [ John  Dec 17, 2018 ]
Based on reviews [ John  Dec 12, 2018 ]
Price, ratings, noise-cancelling [ Anthony  Dec 08, 2018 ]
My wife got this same item and is very pleased with it. I, too, found it works well and decided to order one for myself. [ Samuel  Nov 25, 2018 ]
Reviews were great. [ Susan  Nov 21, 2018 ]
High cost/performance value [ Timothy  Oct 05, 2018 ]
Good ratings and reasonable price [ Brian  Sep 17, 2018 ]
headphones with good sound and good noise cancellation technology at a reasonable price [ K  Sep 02, 2018 ]
Because I want to see how good Sennheiser is I've heard good reviews and also I might use on an airplane if I go on vacation [ Noe  Aug 31, 2018 ]
Sennheiser quality and of course the two year warranty vs. the meager one year warranty for comparable headphones. Also the BT 4.0, But, if they squeeze my head to tight they'll be replaced with Phil's [ Warren  Aug 08, 2018 ]
I have an older model Bluetooth Sennheiser headphones and love them. I saw this newer version that got great reviews and had some Crutchfield rewards points to burn so got them for half price and will use them at my beach house. [ MARK L.  Jun 22, 2018 ]
My first set of phones/wired were Sennheiser....longtime buyer of Senn....Leaned towards Bose, but price too first wireless phone purchase... [ Donald  Apr 04, 2018 ]
Otis recommendation. To be used by 93 year old God Mother. [ David M.  Jan 19, 2018 ]
Bought as gift for discriminating radio dj [ Carolyn  Dec 13, 2017 ]
Recommended by sales associate, Norm. He has a pair and said they are very good. Also, the price is satisfactory. [ Catherine  Nov 25, 2017 ]
Good reviews, good price, have a pair of wired Sennheizers that sound great. [ Matthew  Sep 14, 2017 ]
I have bought and used Sennheiser products and find them very dependable and consistent with the maker's product claims. [ David  Jul 17, 2017 ]
Sennheiser is a known brand for sound quality and it was reasonably priced with a lot of features. [ D  Jun 23, 2017 ]
I bought a pair of these for my wife and she loves them. She returned the favor... [ Mark  Jun 19, 2017 ]
Best price point for a wireless noise cancelling headphone [ David  May 21, 2017 ]
I have a set of Sennheiser Momentum 2 which I love but needed to find a more economical solution. Reviews have all been very good. I will add my thoughts once received and tested. [ Gabriel  May 14, 2017 ]

2 questions already asked

Does it have a replaceable battery ?
[ byron  Nov 15, 2018 ]
2 answers
[ John  Nov 16, 2018 ]
I am not aware of a replaceable battery. Haven't seen any opening for a battery. In 16 months, battery has never been an issue. I would suggest additional online searches or contact the manufacturer.
[ Scott  Nov 15, 2018 ]
is the warranty international ?
[ Richa  Jan 29, 2018 ]
1 answer
For more specifics on the warranty coverage you'll want to contact Sennheiser directly--their support number is 860-434-9190; and you can check their online support site here: Thanks!
[ Larry  Feb 05, 2018 ]  Staff

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