They don't fit fully into the ear canal so you do get background noise.

Its so unbearable to the otherperson either they cant hear or get irritated by all the background noise

I decided to write this review now after months of saying I would because I am at a coffeeshop trying to hear a lecture on my computer (these are Barbri special videos in which there is no background noise and the speaker is wearing a mike; normally loud enough through my computer speakers) and I CANNOT HEAR because the coffeeshop has background music

If you want to talk on phone using these headset then forget about it as its microphone doesn't filter background noise

I work in a shop and these block out enough background noise, but still allow me to hear for any danger.

It cancels out most of the background noise around you (not all of it) so your music sounds crisper and more immersive, and if you are talking to anyone their voices are clear.

Although they are significantly larger than the Jaybird's they actually fit my ear better, isolate background noise better, and are more comfortable.

A lot of background noise gets past the headphones and the mic often pics up external noise

These cancel out a lot of background noise, and have so much volume and

Very good sound qualityPairs easily with phoneBattery life averageA bit on large size in earMy biggest complaint is when on phone call the person on other end hears all of the background noise, and in a loud way (one person described a squeaking door as if a child was screaming).I would look elsewhere

but they let in ALOT of background noise especially when you're at a gym

There is significant delay in the audio making watching video distracting as it is not synced.

The buttons are a little mushy, but thats fine with me as long as they work, and they did.

These are comfortable, don't fall out of my ears, the sound is outstanding both for my music and phone calls (as well as for the people on the other end of the call)

I like headphones always look for something that meets my demands, and buy this Bose sound sport, I recommend the sound is spectacular, smooth as if you were in a movie theater, I give it 5 stars

The sound quality is rich and they’re perfect for his workouts at the gym as well as for his marathon training runs

If for instance you try to run with them, prepare to continually fidget with them as you try to keep them jammed in your ears.

They occasionally lose connection with my phone (not often, but annoying just the same) and the heart rate monitor doesn't work as consistently as I would like.

I ran for 30 mins and they died as I was stretching.

The battery life did disappoint me at first as it couldn't last as

I was really excited to replace my previously stolen headphones with this nearly wireless pair, I run in the gym every day as well as

I love R&B, Pop and Classical music and these headphones really brought the music alive.

As much as I like this earpuds, unfortunately it became really uncomfortable

They do not reproduce the BASS as well as I

... merry x más to YOU