Sennheiser HD 4.40 BT

Sennheiser HD 4.40 BT Around Ear Bluetooth Wireless Headphones - Black

Bluetooth 4.0 and aptX technologies to deliver exceptional wireless sound quality Intuitive ear cup mounted controls for changing tracks and for making calls via the integrated microphone Up to 25 hour battery life and is supplied with connecting cable for battery free listening Compatible with most smartphones & tablets. Height: 7.8 inch / 19.8 centimeter Product Dimensions: 7.1 x 3.9 x 10.2 inches. Connectivity Technology: Wireless; Battery Type: Li ion Polymer Battery Impedance 18 Ohm

Sennheiser HD 4.40 BT Design

The first thing you’ll notice about the Sennheiser HD 4.40 BT headphones is their design, and like the HD 4.50 BTNC headphones, they look pretty nice. They’re not exactly the same as their more expensive counterpart, doing away with the silver highlights in favor of an all black design, but they’re still clearly made by the same manufacture. The ear pads on these headphones are nice and thick — and slightly more so than the HD 4.50 BTNC headphones, which we assume is to help keep noise out in the absence of active noise cancellation. On the right ear cup is where you’ll find all the controls — including a power button, playback control switch, and volume rocker. The controls are the same as the HD 4.50 BTNC headphones, which we noted in our review are a little confusing. While the same, however, they’re a little less confusing here — as there’s no noise cancellation to activate or deactivate using the volume controls. The build-quality of the headphones is pretty good, and while certain aspects feel slightly flimsy, the trade-off is lightness — and we think it’s worth it. In fact, despite that small feeling, the fact is that the headphones were able to withstand all the abuse we could throw at them, so it’s important to keep in mind that a lightweight pair of headphones doesn’t necessarily translate into a weak pair.