I've had these for about two months. What I like about them; battery life is excellet, they can remember bluetooth pairings for up two eight devices which for me is really practical, phone, tablet lap top ans when I get one that has bluetooth TV .

I wear them all the time while doing yard work! A lot cheaper then some of the others and sound just as good.

Good neutral sound. Like to collapse them. Not the most comfortable naps. Works well for a few hours, then it's nice to take them off. That works well for the daily commute. Battery life seems good. NFC to connect works well and is convenient.

Comfortable to wear except they get a bit sweaty if exercising. Noise reduction is good but not great. If is hard to tell if the noise reduction is on or off. The blinking light is the same for both. You have to try them on each setting to tell whether it is on.

This is my first pair of over the ear headphones so my thoughts after a week. Battery life - Excellent Sound quality - Good I listen to a range of genres for Hip Hop and R&B songs with a lot of deep base these are excellent the only down side is that they aren't very load.

For a price of around 199 euros, Sennheiser offers an enticing package with the HD 4.50BTNC, combining quality sound, functionality and convincing performance into one neat product. Even better, you'll be able to find the model in specialist shops at an even lower price of around 140 euros.

Returned these the next day. Noise cancelling and volume extremely poor. Could hear the microwave as well as conversations even on the highest volume. Along with this, the volume was not loud at all, in an empty, quiet house these still made me feel like I was wearing the apple earphones that came...

Great sound

Best sound quality of any headphones I've ever owned and extremely comfortable. Unfortunately the supplied audio cable (I use these with a number of devices that don't pair with wireless headphones) gave up the ghost and started making the audio crackly and quieter after about 5 uses despite me...

These headphones have been great so far. Battery life is insane and sound quality is better than I would expect for a $100 pair. Bluetooth range is really long, and you can also plug these directly into your computer using the aux that comes with them. Bass is really crisp, but not super heavy.