Using the Ikos headphones as a headset worked great throughout my experience and I had no complaints from people on the other end of the call. The headphones get plenty loud and sound quality is decent with a slight bump in bass and a roll off in the upper frequencies.
Overall this is a nice set of Bluetooth headphones. They are comfortable, durable, have good range, and sound decent, all at an affordable price.
If you are interested in these headphones, they can be found here.