1.EM thin / thick card:EM chip, 125KHz 64bit 2.With printed code, color ... 0.8mm, EM chip,125K RO (Read Only) chipEM-01B Thick CardThickness 1.8mm, EM chip,125K RO (Read Only) chipEM ... -01C Thick CardThickness 1.8mm, EM chip,Special card for middle distance ... , EM-01B/C:10.5g;8.Standard Packing: 50pcs; ID thick Card