These headphones sound okay, but not great. They certainly don't warrant any sort of premium price. You can get similar sounding headphones for half the price. The real Achilles heel of these headphones is the ergonomics: they are horrible to the point of absurdity. The controls are totally unintuitive and wholly forgettable from one listening to the next. They are easily the worst of any wireless headphones or earbuds I have ever used. Ever. And I've used many different models from many different manufacturers over the years, both expensive ones and inexpensive ones. It's almost as if they tried to make the controls as horrible on purpose in order to upsell you to a more expensive model? I can't say, I didn't try more expensive headphones, and based upon these headphones, I will never buy any other Sennheiser headphones. Do you know how you can tell the headphones are powered on, or connected to Bluetooth? You can't. There are no indicators. You have to press the power button, and if they're off they'll turn on, and if on they'll turn off. That's it. You'll get the audio prompt of powering off or on, but you can't look at them for a visual indicator. That might not be a big deal if you have one set of headphones, but like I mentioned, I have multiple, and all of them, other than the Sennheisers, show on or off %26 Bluetooth connected or not. So the sound quality isn't really worth the premium price, and the usability is so poor that they lose whatever rating stars they might otherwise be awarded. If they sounded great, I'd give them 3 or 4 stars, but they don't. The horrifying ergonomics subtracts whatever 2 or 3 stars they might otherwise be awarded.