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New Access Control Card Smart Ring with Chip 125kHz RFID - China Smart Ring, Smart Ring NFC | Made-in-China.com
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Amazon.com : Riversmerge RFID Rewritable 125KHz/13.56MHz ID/IC T5577/UID Changeable Black Ceramics Smart Finger Ring for Men or Women, with One RFID Reader Copier for Duplicate (125khz Black 21mm) : Electronics
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Amazon.com : Riversmerge RFID Rewritable 125KHz/13.56MHz ID/IC T5577/UID Changeable Black Ceramics Smart Finger Ring for Men or Women, with One RFID Reader Copier for Duplicate (125khz Black 21mm) : Electronics