rfid wristband 125KHZ EM4100 Read only 60mm diameter for Adult size pack of 5 (blue)

Chip Specifications: Features 125khz EM4100 Chip, Read Only functionality, cannot be rewritten or reprogrammed Pre-Programmed Unique ID: All chips come pre-programmed with a Unique ID number that cannot be changed or modified Standard 125khz Compatibility: Works as a normal 125khz ID card and is compatible with standard 125khz ID readers Authentic Brand Verification: Package includes YARONGTECH Brand sticker to ensure product authenticity Adult Size Dimensions: Diameter measures 60mm suitable for adult wrists, available in black, blue, orange, red, and green colors with optional logo printing Durable Silicone Material: Constructed from high-quality silicone material for comfortable and long-lasting wear Convenient Pack Size: Comes in a pack of 5 wristbands in blue color for multiple uses or events