... black, etc. 4.Fast delivery Waterproof silicon wristband with high quality from China IC Options of RFID Wristband1) LF (125KHz): ... : silicone2) Dimensions: watch dial—oval; inside diameter--65mm; band width—20mm3) Color: blue, red, black, white, yellow, grey, ... use, waterproof, moisture proof, shockproof, and resistant to high temperature2) Working temperature: -50°C~240°CPrinting OptionsLogo printing ...