Is good for the priceSe escucha muy bien, y lo mejor es q le dura mucho tiempo la bateríaWorks wellThe sounds is good and the battery life is good. But it takes 5 seconds of holding the power button down to turn the Bluetooth on or off. That is an eternity when powering on a device. Had I known that before purchasing it, I would have passed. I need something that turns on in one, maybe two seconds.The detachable thing that holds the earpiece on my ear will probably break or get lost. One star less for not making it one piece with the unit with a swivel and hinge as Plantronics does. A couple of bucks more for something that won't break or get lost would be worth it. Penny-wise, pound foolish. Sound quality good, battery life excellent. Can't say about noise cancelation. I haven't used it to make calls on the road yet.The flexible earpiece should be rounded and not squared off. I believe due to this design, wearing the ear piece becomes very uncomfortable after a short time. I cannot seem to get the volume high enough to hear when there is a fair amount of noise around. The earbud does what it says though, providing hands free phone phone calls for a fairly low price. Regardless, I would not repurchase this brand of wireless earbud. Too uncomfortable.I like this headset, it gets a little uncomfortable after a few hours which isn't great. I wish it warned of low battery sooner though. I'm sometimes on meetings that last hours so a warning at like 20% would be nice. Right now it just says battery low then dies 20 minutes later, not really useful at all.It does what it is supposed to, but it isn't the best earpiece I have had. I keep losing mine and having to buy new ones. The "cup" over the speaker is not very comfortable. It doesn't stay in place as well as others I have had for similar price. Since I lose them often, I am not going to spend more money for better versions. This one does what I need, but I wouldn't buy it again.