4PCS Colorful 125khz Rfid Waterproof Proximity ID Card EM card RFID wristbands bracelets and wrist band ID TK4100 silicone id wristband (4colors)

Description

1. Name: RFID Bracelet 2. Frequency: 125KHz 3. Chip: TK4100 4. Material: Silica gel 5. Size:Outer diameter 74mm;  Inner perimeter 20cm 6. Waterproof, moisture, shock, high temperature resistance 7. Closed-loop wrist strap, flexible, easy to wearing and easy to use 8. Applies: swimming pools, cooling libraries, sauna bath center, supermarket, playground, children's park, ticket system, etc. 9. Package: 4pcs/box Note: Not compatible with any HID card