TK4100 Silicon RFID Wristbands 1.LF/HF RFID tag 2.TAG Type:Read/Write 3.Contactless tag,Proximity tag Decriptio Material:100% silicon Color:blue,red,black ,white ,yellow ,gray,pink,green,ectFeture1,colosed-loop wristband,elastic, easy to carry ,waterproof,moistureproof,shockproof,High temperature resistant2,Low frequency chip available(125KHz) :TK4100,EM4102,EM4200,T5577 etc3,High frequency chip ...