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Amazon.com: Smart Ring, NFC Multi-Function Smart Rings Magic Wearable Device Universal for Mobile Phone, Connecte to The Mobile Phone Function Operation and Sharing of Data(11in) : Electronics
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Amazon.com: NFC Smart Ring, NFC Multi-function Smart Rings Magic Wearable Device for Mobile Phone, 6/7/8/9/10/11/12/13 inch Optional(8inch) : Electronics
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