Access control: waterproof, shock-proof, high temperature The wristband of the bracelet is an chip, which needs to be written on it before it can be read. Stable performance: The RFID wristband adopts a working frequency of 125KHz, and the performance of this RFID wristband is stable and Formatted in the standard format used in most access control security systems. Comfortable to wear: closed-loop wristband, bright color, comfortable to wear. Adjustable wrist strap fits almost all sizes. Wide application: RFID access control wristbands are suitable for swimming pools, gyms, cold rooms, access control, etc., suitable for humid environments. High-quality and: high-quality silicone material, non-cracking, long service life, non-irritatin, Weight: 0.32187490252 pounds, Manufacturer: NONDK