The new Sennheiser HD 4.40 BT offers high-quality wireless sound for every day listening on the move. The closed-back, around-ear headset features Bluetooth 4.0 and aptX compatibility to deliver true Hi-Fi sound with a satisfyingly dynamic bass.
| Performance | |
|---|---|
| Connectivity technology | Wired/Bluetooth |
| Brand compatibility | Universal |
| Total Harmonic Distortion (THD) | 0.5% |
| Ports & interfaces | |
| Bluetooth version | 4.0 |
| Bluetooth profiles | APT-X |
| Headset connectors supported | 3.5mm stereo |
| Headphones | |
| Ear coupling | Circumaural |
| Acoustic system | Closed |
| Impedance | 18 Ω |
| Headphone sensitivity | 113 dB |
| Headphone frequency | 18 - 22000 Hz |
| Microphone | |
| Microphone frequency | 100 - 10000 Hz |
| Microphone direction type | Omnidirectional |
| Weight & dimensions | |
| Width | 10.00cm |
| Depth | 18.00cm (L) |
| Height | 26.00cm |
| Battery | |
| Battery technology | Lithium Polymer (LiPo) |
| Design | |
| Headset type | Binaural |
| Colour of product | Black |
| Volume control | Digital |
| Wearing style | Head-band |
