I bought mine at TTSH, with some discount,, with 24 months warranty & free accuracy test, bought the wall adaptor for $30, in case I can not find batteries...but this is only for insurance...The lower end models, that is cheaper Omron's are assembled or made in Vietnam or China, look kind of flimsy.
Needed to have one of this blood pressure monitor, for the BP is beginning to rise & fall like the stock market index...some day "over bought" * some day "over sold"...
Monitoring the BP is just one thing, I have restarted an exercise routine, for I have stopped doing physical excercise for a very long time, no more playing games, like squash, Tennis , Table Tennis or even Badminton ( now bedminton), or even gone jogging. So now, it is brisk walking up to 1km every monring..before the cock crows ( never mind which "cock") & controlling what goes into the stomach, that is, watch what we eat.
Monitoring BP is just part of it...diet & exercise, must follow, or we will become a statistic for the 2am-6am..."statistic".