nfc bracelet 4k, nfc wristband 4k, MIFARE Classic 4K bracelet Material: Silicone, TPU, soft PVC, plastic etc Size: Closed type or Adjustable type, custom size & shape acceptable RFID chip type: LF, HF, UHF all available: For HF 13.56mhz, we have: Protocol ISO/IEC 14443A:
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