libitum chip: EM4305, T5557, T5577, 5200 frequency: 125KHz Storage Capacity: 512bit Size: 4330×5mm vel 50×30×5mm, Can customized Read and write distance: 2~ 10cm, depending on the reader and the application environment Working temperature: -20℃~+80℃ Materials: ABS Erasable times : >100,000 times Storage: 10 years Colors: rubrum, viridi,, caeruleum, aurantiaco, flavo, album, ad libitum