I did have an issue with a phone call, but it could have been the ambient noise in the gym rather than the microphone.

In the EndThe Cootree Bluetooth Headphones are comfortable to wear, stay in place when you are active, and most importantly, sound great by drowning out ambient noises around you and filling your ears with music

being remarkably comfortable, it is great at filtering out ambient noise, so the music that you hear is that much clearer

Though not quite audiophile standards, the sound quality is very good -- bassheads might be disappointed, but it provides an overall balanced sound without being muddy at higher volumes* Doesn't block out external sounds -- I listed this as a "pro" because while running or walking out-of-doors, it's important to hear what's around you, especially cars, and these headphones allow for that (it might not, however, be so great in the gym when you *want* to block out the ambient noise

I wish they were just a tad bit bigger over the ears to block out more ambient noise.

That said, the first day I used them I was very happy with the sound quality and ease of pairing, as well as the overall fit and comfort

I don't like earbud or in-ear headphones for exercise, as they fall out of my ears or clog with sweat, and I needed something to replace my old wired Sony over-the-ear headphones that are now out of production.

Happy.(would have preferred an all black

I use outside and inside when working on house and yard, as well as when on elliptical and they do not fall off.

While it worked I liked it and would had loved if it lasted longer

I will see how they hold up to sweat, but if they die I a month, I'd just buy another set because they actually stay on your head and over your ears the entire workout (I normally work out 1 1/2 hour a day 6 days a week)

Very flimsy plasticy, rubbery material with cheap-o foam padding ear pieces

While it worked I liked it and would had loved if it lasted longer

I will see how they hold up to sweat, but if they die I a month, I'd just buy another set because they actually stay on your head and over your ears the entire workout (I normally work out 1 1/2 hour a day 6 days a week)