How accurate is this monitor, I had the Lumiscope 1140 and it was accurate within 3 to 5 points of my doctor's reading?

This blood pressure monitor adopts intelligent pressure automatic measurement technology, which provides not just the fastest measurements but the most accurate readings.

Questions & Answers: Wrist Blood Pressure Monitor Automatic BP Machine with Large Backlit Display Heart Rate Monitors 2x99 Readings 5.3-7.7in Adjustable Cuff for Home Use,Include Carrying Case and 2AAA Batteries-Black

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Wrist Blood Pressure Monitor Automatic BP Machine with Large Backlit Display Heart Rate Monitors 2x99 Readings 5.3-7.7in Adjustable Cuff for Home Use,Include Carrying Case and 2AAA Batteries-Black

Large Backlit Display---Easy to read measurements even in the dark Four-color indicators also provides you with a convenient way to recognize your blood pressure level.
Dual User x 99 Memory---Available for 2 users, keeping 99 memories with time and date stamps for each other. Perfect to keep track of your fitness and compare trends over a period of time.
Accurate Results---Adopts intelligent pressure automatic measurement tech, this bp monitor will give you not just the fastest measurements but the most accurate readings.
One Button Operation---Easy to use with one-button operation. Just simply wear the cuff, pressing the START button, and you will get the reading within 30 seconds.
Adjustable cuff---The adjustable 5.3-7.7 inch cuff easily fits around most adults. Lightweight and portable design suitable for home and travel use.

$38^.98 –