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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(11inch) : Electronics
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Welling NFC Ring Universal Sensing Technology Comfortable Wear No Charge Smart Lock NFC Ring for Mobile Phone - Walmart.com
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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(11inch) : Electronics
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