1.13.56MHZ Proximity key type Employee IC Card 2.Weight: 5. ... Surface Options Access Control Keyfob / Key tag / Key ChainParameter Weight : 6g~12g depends on the part Standard Color : Grey, blue, yellow ... at 125KHz nominal EM4100,EM4120, TK4100,etc. IC Available at 13.56MHz nominal Mifare1 S50,Mifare1 S70, Ultralight,Mifare Desfire, etc ...