If you can recognize the beat pulse in the video with your EARPHONES, you can use Accutension stetho to calibrate your blood pressure monitor. Comment to learn more. Considering that so many people even don't notice there is such inaccuracy problem, it is important to design a simple tool so that everyone can easily check their own blood pressure monitors. The stetho is available on Amazon Launchpad: [ Ссылка ] or visit our website huludevices.ccom. If you like the idea, please leave us a comment. Thanks!

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