Size: 1.30*8.5mm, 1.35*8.5mm, 1.40*8.5mm, 2*12mm, 3*15mm Material: Bioglass Chip: EM4305 216 Frequency: 134.2 kHz 13.56 MHz Protocol: ISO11784 785 ISO IEC14443 A Memory size: 512 bytes 888 bytes Reading distance: 1 cm-10 cm (Depend on devices) Working temperature:-20C-80 C Using times:> 100,000 times Date retention:> 10 years