125Khz TK4100,Clamshell Smart Card 1, Logo full color printed 2, ISO7816 3, chip:TK4100,EM4200,T5577,EM4305 125Khz Proximity Clamshell Smart Card smart card/smart tag operating temperature ... .35, Dia.25, or custom size Application: Public transportation,payment card,access control ,assest management,NFC Mobile payment,E-ticket,Library ...