... 2.inside diameter--74mm OR 65mm 3.Color:blue, red, black, etc. 4.Fast delivery Waterproof silicon wristband with high quality ... from China IC Options of RFID Wristband1) LF (125KHz): EM4100,EM4200,T5577,Hitag 1,Hitag 2,Hitag ... and use, waterproof, moisture proof, shockproof, and resistant to high temperature2) Working temperature: -50°C~240°CPrinting OptionsLogo printing, ...