Mpow Seashell Bluetooth 4.1 Running Sports Headphones with Microphone

I like to listen to music when I am at the gym, but hate that the headphones I use have to be plugged into my phone. I was excited to get these headphones and try them out. I have never tried Bluetooth headphones before these.
I recieved the Mpow seashell headphones in the green color that is in the picture. The headphone were packaged in a box with a magnetic lid. The headphones are laid on cut out insert that is covered in a felt type material.
The headphones included three different ear piece sizes with stabilizers and instructions. It also comes with a USB cord for charging.
I paired the headphones with my iPhone 5s and iPad Air 2 following the instructions. The pairing took a few seconds and that was it. The headphone verbalize when the pairing is a success. There is a volume control switch on the cord that also works to answer and make phone calls.
The headphones fit comfortably in my ears and I did not have to constantly rearrange them, nor did they slip or fall out. The music and sound quality is perfect. My next question was how well I would be able to hear phone conversations and how clear I sounded to the person on the other end. Crystal clear calls. The person who I was talking to on the phone said that I actually sounded clear talking thought the headphones then on my regular phone.
The only con to these headphones is that there is not indication of the charge level.
I would not have any problem recommending these headphones, especially those that are athletic and enjoy listening to music without being tethered by a cord.
I recieved this item free or at a discounted price in exchange for my honest review.
http://www.amazon.com/dp/B016WFWU04#customerReviews