Stable performance: The RFID wristband adopts a working frequency of 125KHz, and the performance of this RFID wristband is stable and professional. Formatted in the standard format used in most access control security systems. Wide application: RFID access control wristbands are suitable for swimming pools, gyms, cold rooms, access control, etc., suitable for humid environments. Comfortable to wear: closed-loop wristband, bright color, comfortable to wear. Adjustable wrist strap fits almost all sizes. 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. High-quality and: high-quality silicone material, non-cracking, long service life, non-irritatin Color: Blue Material: Silicone Package Contents: 10 x RFID Bracelet Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.