I was given this for free or at a reduced cost for my honest opinion. This is an amazing find for me. I have a hearing loss and I cannot hear on cell phones, however now I can this is loud, clear and now I can have a private conversation. This is sweat proof and you can take it to the gym with you and it is a Bluetooth device and talk on your phone or listen to your music. It has a built in mic. It is sold on Amazon by earfly for $29.99. check them out on amazon.