LF 125khz RFID Wrist Band Waterproof of IP 67, IP68; Color: Black,Yellow,Red,Blue, ... is widely applied in around pools, waterparks, spas and other RFID access control applications where a waterproof bracelet is required. Key ... inside (125KHz or 13.56MHz chip).125KHz RFID: EM4200, EM4305, TK4100, T5557;13.56MHz RFID: Mifare 1K, Mifare 4K, Mifare Ultralight, Mifare ...