Was sceptical at first as used it for anxiety, rather than for what it is originally designed for. This is a good quality unit, which is easy to use, but I have a couple of issues with it. Firstly, there is only one session frequency. Each session lasts maximum 60 minutes and I feel like there should be an option for longer programs. The session also seem to default the level to 1. It seems expensive, but you cannot put a price on the relief it has offered me. Disclaimer: do consult your doctor if you are using it for anxiety etc. as everyone is different and the fact that it worked for me does not mean you will get the same results