Sennheiser HD 4.40 BT Wireless Over Ear Headphones

MSRP 149.95
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Designed for use on the go

The new Sennheiser HD 4.40 BT’s are designed for listeners on the move and deliver a high quality, detailed acoustic sound. They are the perfect companion for use with mobile devices and provide cable free listening while you’re on the go. They feature Bluetooth connectivity and Apt-x technology for consistent, reliable streaming. They are equipped with Bluetooth 4.0 and Apt-x technology for a dependable wireless signal transmission. This technology enables a reliable wireless connection for streaming with the highest possible sound quality available in an audio streaming format. The HD 4.40BT’s deliver true hi-fi sound with a deep, dynamic bass response. Their look and design are both practically minimal and elegant.

Classic Sennheiser sound

Not only are the HD 4.40BT’s great for use on the go, they feature the classic Sennheiser sound powered by proprietary Sennheiser drivers. They feature a noise eliminating closed back design to the let the listener fully appreciate their listening experience. Sennheiser’s proprietary drivers are rigorously tested to ensure a well balanced, dynamic sound with a detailed bass response. Easily take control of the HD 4.40BT’s with their intuitive ear cup mounted controls. They allow you to adjust the volume, skip tracks, and take calls quickly and easily while you’re on the go. Their large padded earcups are designed for comfort and their folding, compact design make allow them to be stored quickly and easily.


  • Wireless Bluetooth connectivity
  • Classic Sennheiser proprietary drivers
  • Apt-X technology for reliable wireless transmission
  • Intuitive ear cup controls
  • Comfortable wear with folding design
  • Minimal, elegant design

In the box

  • Sennheiser HD 4.40 BT Wireless Over Ear Headphones
  • Detachable cable with angled 3.5mm plug
  • Cloth storage pouch
Battery: Lithium Ion Polymer Battery
Transducer principle: Dynamic
Sound Pressure Level: 113 dB
Impedance: 18 Ohms
Ear Coupling: Closed, Circumaural
Frequency Response: 18-22,000 Hz
Total Harmonic Distortion (THD): <0.5% (1KHz/100 db)
MSRP $149.95 

3 Reviews

Customer Reviews



The item arrived perfectly. Sound quality was amazing. I did alot of research to compare this versus the Skull crusher Wireless, and Sony 950. This turned out to be amazing. The item was delivered just as expected. Would buy again.

Reviewed on 03/10/2017
130 out of 258 customers found this review helpful.
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Great value

Comfortable, good battery life, excellent range, decent sound, easy to use

Reviewed on 04/30/2017
113 out of 221 customers found this review helpful.
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Great Value

I've tried a lot of headphones, and for the price these can't be beat they are better than some products that are twice the price. The only thing to mention is that they do NOT sound great right out of the box, I'd highly recommend downloading CapTune (which they mention in the documentation) because unless you play with the sound settings to fit your needs then they'll sound very flat and boring.

Reviewed on 05/30/2017
110 out of 220 customers found this review helpful.
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