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just got this item and start using it and everything is working fine.
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Arrived in good condition
I purchase that watch for blood presure monitoring, ECG and SPO. But, after 2 weeks of use i can only say: blood presure, ECG and SPO are the same on all condition. Even after a greater effort, get the same parameters. ECG are the same, blood presure are 119/89 in every moment of my life :) Moreover, after 2 weeks of use, the battery lasts only 3 days... I'm very disappointed :(
Buy this as a toy only. it is by no means a medical device. I was in Atrial Fibrillation ar 214 beats per minute. this watch stated normal sinus rhythm. I checked more than once and again a normal reading. The blood pressure feature never matches the numbers you get from a cuff either, even after you calibrate the watch. it is only a toy.
I purchased it to monitor my blood pressure unfortunately its not working properly its just a watch to check the time nothing more