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Jakcom R3F NFC Smart Ring (Please open NFC function, then scan the QR code on the box to get details instruction,please trust the app,it is safe.)2 Colors: Black or WhiteThere are 6 different sizes of this Smart Ring available, #7/#8/#9/#10/#11/#12....
R3F NFC Smart Rings work with any smartphone, tablet, door lock, or other device that has NFC tag capabilities, primarily Android and Windows Phone platforms. While some iPhones have NFC functionality, they do not currently have NFC tag functionality...
Health ModuleCrystal ceramic has trace elements which can improve the human metabolism and effectively promote blood circulation.Cotopaxi volcanic magmatic - Thousands years of geological movement gives it striking ability, and enable it to have grea...
FeatureBuilt in dual NFC chips, ultra sensitive and ultra strong read and write ability, good performance.IP68 waterproof level can be more convenient for daily life, you can wear it when showering or swimming, more usefulSmart ring have several funn...