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Wearable devices monitors human activities through electronic sensors,and they are at the consumer electuonics level.It's normal for certain deviation.The user should treat data objectively.
--Please do not compared to hospital equipment about reading,it is NOT a medical device !
--Before using, scan the QR code on the manual to download the app and connect it to the watch with APP.
--For Android user: Please always authorize app access to all phone functions and always let it operating on. and please turn on the GPS on your phone before you connect it.
-- Please charge it for 2-3 hours when you receive it. it was run out of power after the long delivery. Thank you!