I purchased this with the Jabra Music adaptor and they work well together. They are a bit heavy and not the most comfortable headphones that I worn, you must adjust them by moving them around frequently. The sound quality is very good, decent bass, much better than lightweight headphones. I am impressed by the battery life and they work very well as a headset for my cell phone. I can hear and be heard by people that I talk with. You can easily and seemlessly switch between your music and phone. Overall, I am pleased with my purchase.