Bests & Worsts Reviews from Amazon

I have a history of high blood pressure where it can get as high as 190 and that is very dangerous so i need to monitor it frequently. I bought this in June 2018 so last summer, and it's already quitting on me, reading REALLY inaccurate. I have to use it several time to get a proper reading, if it's even accurate at this point, i don't trust it, otherwise the numbers are all over the place, like really low 80 (low for me) or 170 the next try... . I do not recommend something that some people rely on for their health. I always review things a few months after i buy them for accuracy and overtime this one is not accurate at all, now i have to waste money to buy a different one.