... : blue, red, black, etc. Silicone Rfid Wristband for Swimming pools/baby care IC Options of RFID Wristband1) LF (125KHz): EM4100,EM4200 ... .2) HF (13.56MHz): Mifare1 S50,Mifare1 S70,Mifare Ultralight,I-CODE2,TI2048,SRI512, etc.3) UHF (860 ~ 960MHz): UCODE GEN2 ...