RFID Keytag H4100,H4120,EM4450,EM4100,TK4100,T5557,Mifare1 S50/S70 Meterial:ABS Frequency:125khz/13.56mhz Meterial: ABSDimension: 35.4×23.3×4mmFrequency: 125khz/13.56mhzStandard color: blue,other color need customization.Packaging: gluedTemperature. -25 ~ + 50 degreeIC available at 125KHz nominalTK4100, EM4100, EM4102, EM4450,NXP Hiatg1, Hitag2, HitagS256, HitagS2048,Atmel temic 5567IC available ...