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Instructions for use: (1) first ,please confirm your phone with NFC function (2) If your smart phone with nfc function, open the nfc switch, then down

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Features: * Water Resistant and no charging required. * Lock and unlock your smart phone or tablet quickly, hide the app when you leave your smart

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Multifunctional: The smart ring can be 2 IC cards (13.56MHZ) 2 ID cards (125KHZ) and 2 NFC cards at the same time, such as access control card,

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