Not sure. Haven't received the goods yet
I love the Salin Plus, if I have any issues customer support is amazing!
Have been using the Salin Plus for some time and found it to be most effective. Only wish salt cartridges would last a little longer. Other than that, a great and effective product.
I have had this unit for around 2 months now, and have found an improvement in my sinus and no cold so far this winter season. (last winter had almost constant cold). The adaptor did die in first few weeks, but was super happy when I called and had a replacement sent straight away at no cost. So yes would recommend.