BT7 headset is placed on the indent behind th ear. I find the BT7 relaxing in the first setting as long as it is not turned up very high. If you use it a lot you will find your tolerance increases for higher power levels. I was hoping the BT7 would resolve some panic attacks I was having a couple of years ago. It didn't, but helped me to relax a little better. The BT7 might be a better tool for depression than anxiety since they are different neurotransmitters. Perhaps if the BT7 had a true .5HZ setting it might work better for anxiety. Not sure about this though. It is one of the better CES units on the market and the price is unbeatable.