I really love my Rowkin Minis. If you use two of them then you need to pair them together. Instructions are plain and easy to do. After you pair them, you have a Master (left ear) and a Slave (right ear). Now some have issues with the Slave, but if you turn it just so the little flashing light is on top, it straightens out.
I suffer with Tinnitus (ringing in ears) and use sound therapy to relieve it. With one in each ear it has noise canceling ability. I can really get relief from using sound therapy right on my cell phone and downloaded apps. I love the fact that there are NO cords. Freedom!
Bottom Line: Yes, I would recommend this to a friend