RFID wristband: 1.Oval dial, Waterproof 2.inside diameter--74mm; band width-16mm 3.Color: blue, red, black, etc. 13.56MHz Mifare RFID wristband with 1k Byte Memory 1. Waterproof, dampproof., Quakeproof, high temperature resist 2.Ring type wrist band, flexible, convenientRFID Silicon wristband flexile and steady in use, waterproof, used for swimming pool, amusement park.The wristband is made of ...