Smart Ring, NFC Multi-Function Smart Rings Magic Wearable Device Universal for Mobile Phone, Connecte to The Mobile Phone Function and Sharing of Data(7in)

Through the NFC radio frequency communication technology and mobile phone connection to the mobile phone function and sharing of data. No charge / depth waterproof, built-in ultra-sensitive NFC chip, no electricity to work, easy to wear. Multi-functional NFC smart ring, the main function is to store and exchange information, as well as mobile content and encryption unlock. Lock / unlock the program, select the application you want to lock / unlock, write the smart ring, only the ring touch the phone to start the application, to protect Beautiful appearance, easy to use.