... black, etc. 4.Fast delivery Waterproof silicon wristband with high quality from China IC Options of RFID Wristband1) LF (125KHz): ... grey, green, pink, etc.Features of RFID Wristband1) Close-type watchband, elastic, easy to wear and use, waterproof, moisture ... proof, shockproof, and resistant to high temperature2) Working temperature: -50°C~240°CPrinting OptionsLogo printing ...