Sennheiser HD 4.40 BT Headset

Code: 506782
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Manufacturer Sennheiser

Enjoy wireless freedom and great Sennheiser sound. Everywhere. Every day.

Great news for music lovers who lead the mobile life. Here comes a headset that brings on all you need and want to enjoy your music on the go: The wireless freedom of movement, the intuitive ease-of-use, the portability, the effortless style. But most of all: The sound, powered by proprietary Sennheiser drivers.

You are listening to well-matured sound

When you love the sound of the HD 4.40 BT, that’s no coincidence at all. The closed-backed design of this headset is fitted with proprietary Sennheiser drivers that came a long way before being allowed to transmit sound to your ears. So, enjoy their well-balanced, amazingly detailed sound with dynamic bass.
You are listening to well-matured sound

Strong ties that will free you

The HD 4.40 BT is about freedom of movement. Thus, no cable. Instead you get the latest wireless technology and audio codec with Bluetooth 4.0 and aptX for reliable transmission and true wireless Hi-Fi sound. While Near Field Communication (NFC) ensures immediate and simple pairing with compatible devices.
Strong ties that will free you

Control is all at your fingertips

Want to take or make a call, change a track, adjust the volume? With the intuitive ear-cup mounted controls and the integrated microphones of the HD 4.40 BT all this is actually fun. Have a try.
Control is all at your fingertips

Comfort to make you feel at home – everywhere

The HD 4.40 BT was made to go places with you – and make these places more pleasurable. With its around-ear design and deep, ergonomically designed ear pads it offers comfort even during extended listening sessions. Its robust foldable headband design that can be easily and compactly stored in the supplied protective case makes for perfect portability.
Comfort to make you feel at home – everywhere

Style as clean as the sound

Elegantly minimalistic – using tough, high-quality materials: That is how the HD 4.40 BT was designed. Its sleek frame not only makes it more comfortable to wear, it also makes a statement of timeless class.
Style as clean as the sound

What's in the box?

  • HD 4.40 BT Wireless Headset
  • 1.4 m audio cable with 3.5 mm angled plug
  • USB charging cable
  • Storage pouch
Ear Coupling:
Closed acoustic
Travel, Mobile Devices
Sound Systems:
Frequency Response (Headphones):
18Hz - 22kHz
Impedance (Headphones):
18 Ω
Sound Pressure Level (SPL):
113 dB (Passive: 1kHz / 1Vrms)
Total Harmonic Distortion (THD):
< 0.5% (1 kHz / 100 dB)
Transducer Principle:
Pick-up Pattern:
Dual omnidirectional microphones
Microphone Sensitivity:
-44 dBV / Pa
Bluetooth Version:
4.0 / NFC Pairing
Supported Profiles:
Charging time:
~ 2 hours
Operating time:
up to 25 hours
Battery Specification:
Li-ion Polymer
1 x 3.5mm stereo jack, Bluetooth
up to 10 m
1.4 m audio cable ; USB charging cable
225 g
Microphone, Volume Control, Single-sided cable, Detachable cable, Foldable

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