Get Wireless Freedom at significantly less cost than Bose QC:

Sennheiser has come-up with expansion of the most popular HD 4 series.

HD 4.50 BTNC and HD 4.40 BT wireless headphones are launched just for your needs, bringing the wireless freedom of movement. Surprisingly they cost significantly less than Bose QC35 still delivering descent sound quality and effective noise cancelling too 🙂

Go Intuitive:

The intuitive ease-of-use, the portability, the effortless style And of-course they are powered by proprietary Sennheiser drivers delivering well-balanced, amazingly detailed sound with dynamic bass.

All new Sennheiser HD 4.50 BTNC headphones are at par with Bose NC headphones !Click To Tweet

[Suggest to read Bose Quietcomfort 25 vs 35  Review too]

Both the headphones share the Sennheiser signature sound, with lows spanning from just 18 Hz, you can simply feel the punch in Bass … Mids & highs till 22 kHz can cover the Vocals easily, I don’t think going beyond that is much fun though technically desired for. 

Lets Compare:

For those who are running out of time, just go through simple specs comparison of Sennheiser headphones HD 4.50 BTNC and HD 4.40 BT, colored in Green showing positives against each other.

Sennheiser HD 4.40BT vs HD 4.50BTNC Comparison

Best Sennheiser headphones	Sennheiser HD 4.40BT	Sennheiser HD 4.50BTNC
Deals, Discount & Offer Price	Best Buy USA, UK, CA Best Buy Germany	Best Buy USA, UK, CA Best Buy Germany
Color options	Black
Ear pads	Around-ear design and deep, ergonomically designed ear pads
Headband Design	Foldable headband design can be neatly stowed away in the included protective case
Drivers	Proprietary Sennheiser drivers
Impedance	18 Ohm
Frequency response	18 – 22,000 Hz
THD, Total Harmonic Distortion	<0.5% (1 kHz/100 dB)
Microphones	Dual Omni-directional microphones
Active Noise Cancellation	Not available	NoiseGard™ active noise cancellation
Controls	Intuitive ear-cup mounted controls
Bluetooth Version	Bluetooth 4.0
Audio Codec	CD-like sound quality with the aptX codec
Near Field Communication (NFC)	Immediate and simple pairing with compatible devices is ensured by NFC-equipped  Android, Windows 8 and Nokia phones
Working Time	Music & calls up to 25 hours	Music & calls up to 19 hours with NoiseGard™-protected 25 hours with NoiseGard™ switched off
Battery	Li-ion Polymer Battery
Best Sennheiser headphones	Sennheiser HD 4.40BT	Sennheiser HD 4.50BTNC
Deals, Discount & Offer Price	Best Buy USA, UK, CA Best Buy Germany	Best Buy USA, UK, CA Best Buy Germany

What’s difference in Sennheiser HD 4.40BT vs HD 4.50BTNC

These days world is becoming quite noisy around, be it that you are parenting the children in the park, travelling for office work, or even during air-travel (noise of the Jet propulsion), things keep on disturbing you always, making you anxious, restless. Even if you wish to listen to your favorite music becomes a pain. With introduction of Active Noise Cancellation, the scene is completely changed, life has become quieter, making you yourself 🙂

Looks like Sennheiser has rightly understood this need and introduced this feature in all new HD 4.50BTNC.

• NoiseGard™ active noise cancellation
  HD 4.50BTNC features NoiseGuard™ Active Noise Cancellation, researched to the depth of demanding music lovers like you, making sure you just listen to pure music and nothing else 🙂 Forget the environment, no matter where you are, the NoiseGard™ will take care of unwanted noises in the surroundings, So that no one disturbs you….. It’s only in between you and your music 🙂
  Note : You can also switch the NoiseGard OFF by by pressing both volume buttons simultaneously

• Battery Life & Quick charging
  the new HD 4.50BTNC are also backed-up by powerful Li-ion Polymer Battery, combined with low-power Bluetooth technology,  it can deliver 25 hours of music, which remains same as the HD 4.40BT
  Remember the life of 25 hours is with Active Noise Cancellation OFF, obviously when using the NoiseGuard™ active noise cancellation technology the battery life reduces to 19 hours ! still very good I would say.
  Looking at the recharging of battery, it happens in just couple of hours ! looks cool !!

What’s Common in Sennheiser HD 4.40BT vs HD 4.50BTNC

• Ergonomic & Intuitive Music controls
  Lets begin with something which is the basic strength of your BT headset, the music controls, you have to use them now and then, and it is most important to have them ergonomically reachable & operable, as well as intuitive. Both HD series headphones features ear-cup mounted controls with the integrated microphones for making audio calls, switching the sound-tracks.
  [They feature the power button, multifunction button and volume button on ear-cups]

• Long lasting comfort with around the ear design
  Around-ear design & softer ear pads let you wear them for longer duration without fatigue.

• AptX – CD Quality Sound Output
  Both the HD 4.50BTNC and HD 4.40BT uses Bluetooth 4.0 and AptX, ensuring high-quality sound output.

• Bluetooth & NFC Wireless Pairing [Near Field Communication]
  A long press of @2 seconds of the power button, makes the headphone visible to your phones Bluetooth, simply select and pair 🙂
  NFC further simplifies your life by quick pairing with NFC compatible devices like Mobile phones, simply bring the Mobile phone and headset very near to each other and they will pair with each other, murmurous guidelines are available on NFC, just Google for it.

• CapTune App support for iPhone & Android
  Sennheiser  has their own CapTune App for Apple iPhone and Android useful for your HD headphones. Use it to stream music directly from you library.
  Headphones remaining battery life indicator on mobile is very useful feature you get with this App.
  Add on bonus will be the custom equalizer settings and savable profiles.

• Backpack compatible – Foldable
  One more important thing in both these headphones is the portability, both are foldable and can be packed on the go, so quickly goes into your backpack 🙂

Where Bose Quietcomfort costs you $300 to $350, At price-point of $200 with NC feature, Sennheiser HD Series are top headphones in 2017, for sure it looks an attractive proposition.

[Prices are indicative shown based on information on the date of writing this post, readers are suggested to check online prices please]

I suggest you to ignore very slight hitch of less comfort as compared to the Premium quality  high end BOSE or Sony models, remember you are spending significant less amount to get all that you want 🙂

Obviously if you don’t need Active Noise Cancellation then select for Sennheiser HD 4.40BT and if you are vivid traveler and really in dire need of  comfort of quietness, go for Sennheiser HD 4.50 BTNC
[Prices indicated in text are at the time of writing this post, Plz refer to online prices]

Suggested Good Read ….. [Bose Quietcomfort 25 vs 35  Review]

Cheers !!