About this item The RFID wristband is made of high-quality silicone material, which is non-toxic, non-cracking, long service life and non-irritating Closed loop wristband with bright color and comfortable to wear. Available in 4 colors: blue, red, yellow, and black The card reader record wristband is waterproof, -proof, shock-proof and high-temperature resistant, and the high-quality quality can meet your long-term use Suitable for swimming pools, gyms, cold rooms, access control, etc. The and design makes it easy to use in wet environments 125KHz working frequency, this RFID wristband has stable and professional performance. The test reading distance is about 0-2.5cm, and the response is sensitive