One word for NAD'S is pain, product sucks and since I paid with my credit card the co. that sells Nads owns other companies too. Well they charged me almost $200 more on bullshit memberships , they say I signed up for , I disputed it with them and my bank and got my money back. But it was a hassle and I had to cut my old card and get a new one to stop it. Never will I buy on tv again!