Smart rings whose product details explicitly describe NFC or RFID functionality. Card, reader, and phone compatibility must be checked per model; these are not automatically payment rings.
Smart Ring IC / ID / NFC Reader 2 Health Stones Multi-Function Ring | JAKCOM R5-WearableMaster
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This product has multiple variants. The options may be chosen on the product page
Smart Ring Multifunctional RFID / NFC Ring for iOS, Android System | JAKCOM R4-WearableMaster
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This product has multiple variants. The options may be chosen on the product page
Smart Ring Multifunctional Lord Of The Rings, (Number 12) | R4-WearableMaster
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This product has multiple variants. The options may be chosen on the product page