This set includes 5 RFID tokens operating at 13.56Mhz, each with a keychain and in a blue color. The tokens are rewritable and waterproof, making them highly suitable for access control, identification, and other security applications. https://elecena.pl/product/27738518/opencircuit-s50-rfid-tokens-13-56mhz-5-pcs 2025-01-22 https://elecena.pl/product/27738518/opencircuit-s50-rfid-tokens-13-56mhz-5-pcs 2026-02-20