RFID Mifare TK4100 T5577 Keyfob Size:37*30.3*8.2mm Blue/ ... ,other color need customization. 125khz/13.56mhz:EM4305,T5557 Printing Card Number is optional (8digits,10digits,18digits) Meterial: ABSDimension: 37*30 ... at 13.56MHz nominalNXP Mifare1 S50, Mifare1 S70, Desfire MF3ICD41, Mifare Ultralight, Icode1, Icode Sli , Legic mim256, JWL872, TI256, TI2048,INSIDE ...