WHAT A RIP OFF
I bought two wrist type watch blood pressure readers etc when I got them cheap looking and regardless of how we tried would not work. I contacted company told me to hook up to my cell phone waste if time. I was not going to return all way to China would have cost 3 times more than product. It's true what they say "if something is too good to be true then it is." Don't waste your money you will regret it.