About MF 1 IC S70 IC: - IC manufacturer: NXP founded by Philips - Wafer die: MF 1 IC S70 - Function: Read/Write protect by password - Memory: 4K-Byte EEPROM(32 sectors) - Frequency: 13.56MHz - RF protocol: ISO 14443A - Modulation: ASK Key Feature of Mifare 4K Card: - Dimensions: CR80 85.60 x 53.98mm - Thickness: 0.84mm - Material: PVC, PET - Card Surface: Matte/ gloss finish - Housing: Lamination - Working Frequency: 13.56MHz - Reading Distance: 6cm typically - Data storage time: 10 years - Package: 200pcs per Inner Box; 20 Inner Boxes per Carton, each Carton gross weight at 28KGs Printing Option: - Full color offset printing - Silk-screen printing - Silver/Gold silk-screen printing background Options on standard card: - Magnetic Stripe Option: 300oe, 2750oe, 4000oe - Numbering: Jet dot/ Thermo transfer/ Laser engrave - Barcode printing - Signature panel - Embossing 50*14*22 12kg