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Program Lock/Unlock Feature: The smart ring allows you to lock/unlock specific applications on your phone. Simply select the application you want to

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Specifications: The smart ring through the nfc radio frequency communication technology, to achieve mobile phone function operation and sharing of data. By touching the phone nfc signal area, to achieve the screen to unlock; application lock, quick start application, send read business cards, URL information and other functions. Multi-functional NFC smart ring, the main function is to store and exchange personal information, as well as mobile content and personal privacy encryption unlock.

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Multi-functional Smart Ring Wearable Ring with Nfc Compatible with Android and Apple Systems (Size : 11#) : Electronics