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Title: Don't Buy It
Review: I have in addition HEM-650 wrist monitor, a Omron Hem-780 arm cuff which has been checked in a doctors office to be correct. The HEM-650 wrist monitor is constantly 20 to 25 points lower than my home monitor. The position sensor works one out of four times, and is very inaccurate. Then to top it off, Amazons return policy in unreal and out of touch with the business world. By time I've figured out this unit isn't working very well, my 30 days return policy expired, and after 40 days I'm stuck with it.
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